User:TheJoebro64/drafts/SA2

Sonic Adventure 2 (ソニックアドベンチャー2) is a 2001 platform game developed by Sonic Team USA and published by Sega for the Dreamcast. It features two good-vs-evil stories: Sonic the Hedgehog, Miles "Tails" Prower, and Knuckles the Echidna attempt to save the world, while Shadow the Hedgehog, Doctor Eggman, and Rouge the Bat attempt to conquer it. The stories are divided into three gameplay styles: fast-paced platforming for Sonic and Shadow, multidirectional shooting for Tails and Eggman, and action-adventure exploration for Knuckles and Rouge. Like previous Sonic the Hedgehog games, the player completes levels while collecting rings and defeating enemies. Outside the main gameplay, they can interact with Chao, a virtual pet, and compete in multiplayer battles.

After Sonic Adventure (1998), Sonic Team was downsized and a portion of the staff moved to San Francisco to establish Sonic Team USA. They worked on Adventure 2 for a year and a half, with Takashi Iizuka directing and Yuji Naka producing. Developed during a tumultuous period in Sega's history, Adventure 2 had a significantly smaller development team than the first game. Sonic Team USA streamlined the design to emphasize faster, more action-oriented gameplay giving each character roughly equal gameplay time. The levels were influenced by American locations such as San Francisco and Yosemite National Park. The soundtrack—composed by Jun Senoue, Fumie Kumatani, Tomoya Ohtani, and Kenichi Tokoi—spans genres including pop-punk, glam metal, rap music, and orchestral arrangements, and features several metal singers.

Sonic Adventure 2 was released in June 2001, coinciding with the franchise's tenth anniversary. It was the final Sonic game for a Sega console, released in the months after Sega discontinued the Dreamcast and transitioned to third-party development. As a result, a port for the GameCube, released later in 2001, became the first Sonic game for a Nintendo console. Adventure 2 received positive reviews, with praise for its gameplay variety, visuals, and music but criticism for its camera, voice acting, and plot. Although reviews for the GameCube port were more mixed, it was a major commercial success and sold 1.7 million copies worldwide; it is one of the bestselling GameCube games and the system's bestselling third-party game. Following Adventure 2, Sonic became a multiplatform franchise, beginning with Sonic Heroes (2003).

Retrospectively, Sonic Adventure 2 has been described as one of the most important Sonic games for introducing the franchise to a wider audience with its GameCube port. Characters and elements it introduced recur in later Sonic games; Shadow became one of the most popular Sonic characters and featured in the spin-off Shadow the Hedgehog in 2005. Adventure 2 remains popular among Sonic fans and was rereleased for the PlayStation 3, Xbox 360, and Windows in 2012. It has been ranked among the best Sonic games, although some retrospective reviewers felt it introduced elements that harmed the quality of subsequent games. Its story has been adapted across different forms of media, including in the anime series Sonic X (2003–2006) and the live-action film Sonic the Hedgehog 3 (2024).

Gameplay
Sonic Adventure 2 is a 3D platform game divided into two single-player campaigns representing good and evil ("Hero" and "Dark"). Each campaign features three player characters: the Hero campaign stars Sonic the Hedgehog, Miles "Tails" Prower, and Knuckles the Echidna, who attempt to save the world; while the Dark campaign stars Shadow the Hedgehog, Doctor Eggman, and Rouge the Bat, who attempt to conquer it. Both campaigns cycle through levels for its three characters, telling different sides of the story. Levels vary in themes (such as cities, jungles, desert pyramids, and outer space), with some followed by boss fights. The campaigns' stories occur in parallel; completing both unlocks a final story with all six characters, culminating in a final boss fight. Unlike Sonic Adventure (1998), the player progresses through levels in sequence, rather than exploring hub worlds to unlock them.

Sonic and Shadow's levels, similar to previous Sonic the Hedgehog games, feature fast-paced platforming in which the player avoids obstacles and uses a homing attack to lock onto enemy robots. Sonic Adventure 2 introduces grinding on rails, on which the player crouches and leans to maintain speed and balance. Tails and Eggman's levels, based on E-102 Gamma's Adventure gameplay, feature slower platforming emphasizing multidirectional shooting; they are confined to mechs in which they can jump short heights, hover, and shoot enemies. Knuckles and Rouge's levels, like Knuckles' in Adventure, feature open-ended action-adventure gameplay in which the player hunts for three treasures. Their search is guided by radar and puzzle-based clues from harmless robots. Knuckles and Rouge can glide, defeat enemies with punches and kicks, and scale walls, digging into them to find power-ups. Upon completing a level, players receive a letter grade based on their performance, an "A" being the best and an "E" being the worst.

Like previous Sonic games, the player collects rings as a form of health. If the player is damaged while holding at least one ring, they will survive, but their rings will scatter and they have a short amount of time to re-collect some of them before they disappear. The player loses a life if they are hit with no rings, and losing all lives results in a game over. The player replenishes their lives by collecting 100 rings or a 1-up. As both campaigns progress, the characters obtain upgrades granting them new abilities; for example, one upgrade allows Sonic and Shadow to dash along trails of rings to reach distant platforms, one gives Tails and Eggman hover jets that slow their descent to cross large gaps, while another lets Knuckles and Rouge dig into the ground to uncover treasure. Boss fights include battles between the playable characters and large foes whose weak point the player must identify.

Separate from the main campaigns, the player can raise Chao as virtual pets. They have five attributes (swimming, flying, running, strength, and stamina) and a moral continuum from Hero to Dark. From the moment they hatch, their stats can be increased with Chaos Drives or small animals, found in the main stages, which empower them to compete in karate and racing minigames. Their alignment gradually changes based on their affection for the characters; for example, a Chao which likes Tails will gradually become more heroic. Playing with Chao increases affection, and when a Chao becomes fully Hero or Dark, it assumes that form permanently. Although Chao eventually die, they reincarnate if the player shows them enough affection. The player can download their Chao on the Dreamcast's handheld Visual Memory Unit (VMU) to continue nurturing it while away from the console.

Players receive emblems for completing challenges. Each level has five missions; only the first is required to continue the campaign, and other missions include completing a harder version of a level and collecting 100 rings. The player earns emblems by completing these missions alongside tasks related to Chao raising. There are 180 emblems in total, and collecting them all unlocks a 3D recreation of Green Hill Zone from the original Sonic the Hedgehog (1991). In multiplayer modes, players race on foot through levels, have shooting battles in mechs, hunt for Master Emerald shards, or race in go-karts. The multiplayer modes feature several exclusive player characters: Amy Rose and Metal Sonic in the racing levels, Tikal the Echidna and Chaos in the treasure-hunting game, and mechs piloted by Chao and Big the Cat in the shooting levels. An additional racing course, aesthetics for the single-player levels, and menu wallpapers are available as downloadable content (DLC).

Plot
Doctor Eggman learns of a secret weapon from the diary of his grandfather, Professor Gerald Robotnik, and infiltrates a high-security Guardian Units of Nations (GUN) facility to revive it with a Chaos Emerald. The weapon—Shadow, a black hedgehog who proclaims himself the "Ultimate Lifeform"—offers to help Eggman conquer the world, telling him to rendezvous at an abandoned space colony, the ARK, with more Chaos Emeralds. Shadow has vowed to fulfill a promise he made to his friend, Eggman's cousin Maria, before she died; the amnesiac Shadow interprets the promise as one of revenge. Shadow steals a Chaos Emerald, and GUN arrests Sonic after mistaking him for Shadow.

Knuckles encounters Eggman and Rouge, a government spy, attempting to steal the Master Emerald. He stops them by shattering it and searches for the scattered shards to repair it. Rouge and Eggman go to the ARK, where Shadow shows Eggman the Eclipse Cannon, another weapon created by Gerald. Shadow plans to charge the cannon with the Chaos Emeralds and use it to take over the world. Rouge offers Shadow and Eggman a Chaos Emerald to gain their trust. Tails and Amy infiltrate GUN's base and rescue Sonic, while Eggman, Shadow, and Rouge collect three emeralds. Eggman makes a global broadcast in which he threatens to destroy the planet if he is not accepted as Earth's ruler. He demonstrates the cannon's power by destroying half of the Moon. While avoiding GUN forces, Sonic, Tails, Amy, and Knuckles use a Chaos Emerald to track the others to the ARK.

On the ARK, Tails reveals he has made a counterfeit Chaos Emerald to destroy the Eclipse Cannon. As Sonic is about to use it, Eggman captures Tails and Amy, forcing Sonic to return and rescue them. Sonic tries to trick Eggman with the fake emerald, but Eggman deduces the plan and jettisons him in an escape pod rigged with explosives. Tails fights and defeats Eggman. Sonic uses the power of the fake emerald to escape; Shadow is sent to intercept him. Eggman sneaks away with the last emerald and arms the Eclipse Cannon. The entire colony suddenly starts falling, and a prerecorded message from Gerald is broadcast globally: he programmed the ARK to collide with Earth if the emeralds were used, a retaliation against the government for condemning his research and killing his colleagues, including Maria. Everyone but Shadow works together to access the cannon's core and neutralize the ARK using the repaired Master Emerald.

Amy pleads for Shadow's help, and he remembers that Maria really requested for him to help mankind. Shadow catches up with Sonic and Knuckles in the core as they encounter the Biolizard, a colossal lizard and prototype Ultimate Lifeform. Knuckles deactivates the Chaos Emeralds with the Master Emerald, but the Biolizard fuses with the cannon to continue the ARK's collision course. Sonic and Shadow use the emeralds to transform into their super forms, destroy the Biolizard, and put the ARK back into a stable orbit. This depletes Shadow's energy and he plummets to Earth, content in fulfilling his promise to Maria. The people on Earth celebrate as the heroes return home, and Sonic bids Shadow farewell.

Conception
Sonic Adventure, the first 3D platformer in Sega's Sonic the Hedgehog franchise, was developed by Sonic Team and released for the Dreamcast in Japan in 1998. Although the game was a critical and commercial success, Dreamcast sales struggled to meet Sega's expectations. The Adventure team was downsized, and in 1999, 12 Sonic Team members, including Adventure director Takashi Iizuka, relocated to San Francisco, California to establish Sonic Team USA. Sega directed a team of 11—significantly smaller than Adventure team of 120—to begin working on Sonic Adventure 2 after they spent six months localizing Adventure for the West. As with the first game, Takashi Iizuka directed Adventure 2 while Yuji Naka, the Sonic franchise's co-creator, produced it. The development lasted around a year and a half.

Shiro Maekawa, who wrote portions of Sega's Panzer Dragoon Saga (1998) and joined Sonic Team during Adventure production, conceived and wrote Adventure 2 story. Maekawa took the opportunity upon learning that he did not need to be an artist to create a story or storyboards. Because Adventure 2 would be the first Sonic game released during the 21st century, Maekawa wanted a substantial portion of the story to take place in space. The rest of Sonic Team was apprehensive, but Maekawa was able to convince them to go along with it. Maekawa drew influence from the manga and anime he had enjoyed since childhood, including Please Save My Earth (1986–1994). As Maekawa disliked Sonic as a character, he used Adventure 2 as an opportunity to revise him to suit his tastes.

Among Sonic Team's unimplemented concepts from Adventure was a black hedgehog who equaled or exceeded Sonic's coolness. Iizuka said the idea remained in the back of the team's mind and was revived during Adventure 2 brainstorming sessions. Sonic Team USA told Maekawa to turn the concept into a character, but he struggled to do so until writing lines for a scene in which Sonic confronts the hedgehog for impersonating him. From here, Maekawa envisioned the hedgehog as a delicate, pure character who would refer to himself using the more humble Japanese pronoun boku (僕). He was originally named Terios, but was renamed Shadow after another new character, a bat, who became Rouge. Sonic Team intended for Shadow to be a one-off character who would not appear in subsequent Sonic games.

Design
Iizuka summarized Sonic Adventure 2 development as "trying to make the impossible possible", as Sonic Team USA had to overcome the challenge of creating a game comparable in scope to the first Adventure with less than a tenth of the staff. Despite this, he considered Adventure 2 the most fun Sonic game to develop, as the small team meant "we were able to condense all the good elements from the previous game, and deliver a story and game that was satisfying to players everywhere". Due to the smaller staff, Sonic Team USA decided to split Adventure 2 into two campaigns featuring character teams instead of Adventure format of six starring individual characters. Adventure 2 uses the same game engine as Adventure, with improved texture quality and collision detection.

Sonic Team designed Adventure 2 as faster and more action-oriented compared to the slower, more story-focused Adventure. Whereas Sonic Team had tried to include as much content as possible in Adventure, for Adventure 2 they only concentrated on the elements they deemed necessary. Iizuka noted that players who prioritized action found much of Adventure content pointless, so for Adventure 2, Sonic Team USA sought to streamline the experience while retaining Adventure "bulkiness". They removed the hub worlds in favor of linear level progression more in line with the older Sonic games, and divided action and exploration sequences among the characters rather than mixing them. Each level was tailored for its character, and unlike Adventure, in which some playable characters had short campaigns, all six Adventure 2 characters have roughly equal gameplay time.

Iizuka said Adventure 2 was designed to have "more of an American flavor" than Adventure since it was developed in the US. The art director, Kazuyuki Hoshino, noted Sonic was a character designed to appeal to Western sensibilities, and working in the US allowed Sonic Team USA to capture an American atmosphere more successfully than they could in Japan. The levels, drawn from Maekawa's story and setting, were inspired by San Francisco and other American locations, such as Yosemite National Park (where the team vacationed) and the San Francisco Bay Area. Iizuka said they did not intend to "create a simulation of San Francisco" but rather to reflect the influence of their surroundings. The staff frequently received parking tickets from authorities; as a joke, they included the authorities' cars in a level where Sonic could destroy them. The month Adventure 2 was to be released to manufacturing, one artist suggested adding Green Hill Zone, the original Sonic the Hedgehog first stage. Iizuka liked the idea but expected the rest of the team to object, so he, the artist, and a programmer spent a week working on it separately.

One of Sonic Team USA's goals was a frame rate of 60 frames per second, to make the gameplay feel faster. This required some design tweaks, but Naka said Sonic Team's experience with the Dreamcast hardware made it possible. He felt that by then, Sonic Team had "gotten to the point where we can tap the full power of the console and deliver a much better experience to users". Sonic Team USA gave Sonic more abilities, such as grinding on rails, to add rhythm to ensure the gameplay was not only about speed. Sega collaborated with Soap, a company that produced shoes with plastic concavities in the sole for rail grinding, to have Sonic wear a pair of Soap shoes rather than his traditional boots. Iizuka said adding multiplayer was the team's second major goal. Like Adventure, Sonic Team USA included Chao to add replay value. Iizuka described the Chao as a "relatively neutral entity" in Adventure, so in Adventure 2, Sonic Team USA added the ability to raise "Hero" and "Dark" Chao to reflect the conflict between good and evil. Sonic Team USA gave Chao the ability to socialize and interact, which Naka felt "took [them] a step closer to a real artificial life form".

Music


Sonic Adventure 2 soundtrack was composed by Jun Senoue, Fumie Kumatani, Tomoya Ohtani, and Kenichi Tokoi, with Senoue serving as the lead composer and sound director. Senoue, Kumatani, and Tokoi returned from Adventure,  while Ohtani made his first contributions to a Sonic game. Senoue began writing the soundtrack in April 2000; he worked closely with Sonic Team USA and communicated with them regarding Adventure 2 structure, design, and characters. Half the music was produced in the US, while the other half was produced in Japan. Like Iizuka, Senoue considered Adventure 2 his favorite Sonic game to work on, as he found working with a small team in a new environment invigorating.

Senoue wanted the soundtrack to stand out rather than merely serve as background music. He was not entirely satisfied with the first Adventure soundtrack, feeling some tracks did not fit, and sought to compose music that suited the atmosphere of each area. He said the Adventure 2 music team made a pact "to write songs that promoted the game's speed and situations while keeping the best tempo of the stage". They decided to compose each character's level themes in a different genre and divided the work by which genre each composer was most interested in. For instance, Knuckles' stages feature rap music composed by Ohtani, who wanted to focus on a new musical element. Tokoi said the soundtrack explores more genres than the first game's, and other genres include pop-punk, glam metal, and orchestral arrangements.

Singers featured in the soundtrack include Johnny Gioeli of Hardline, Ted Poley of Danger Danger, Tony Harnell of TNT, and Paul Shortino of Rough Cutt. Vice wrote that Adventure 2 songs fall into two groups: "'character themes,' which are leitmotifs akin to pro wrestler entrance music, and level-specific songs". As Crush 40, Senoue and Gioeli recorded the main theme, "Live & Learn". Senoue recorded the introduction for a trial version; he worked on the rest later and completed it within a day, while Gioeli wrote the lyrics. Senoue then sent a demo to Gioeli to record his vocals. played bass and Katsuji Kirita of Gargoyle and the Cro-Magnons played drums. Poley wrote and performed "Escape from the City", the first level's theme. He found writing video game music different, as "[y]ou have to have a lot of action and alliteration. It creates a whole mood and there's no time for breath—the song is over in a minute and a half, and it's intense." The rapper Hunnid-P performed Knuckles' level themes.

Senoue made a demo for each piece of music, using an ADAT system to track guitars or vocals and a Yamaha digital console or Mackie analog mixer for mixing. He edited tracks with his Macintosh before testing them in-game. Once Senoue was satisfied and received Sonic Team USA's approval, he finished sequencing and sent demos to prepare for the recording sessions. The soundtrack was recorded across five sessions in Los Angeles, New York City, and Tokyo. While he enjoyed studio work, Senoue described the last three months as chaotic, as he had to travel between Tokyo, San Francisco, and Los Angeles within weeks to write and record music. Senoue finished the soundtrack in February 2001, after which he worked on the sound effects.

Marketing
Sega announced Sonic Adventure 2 at E3 2000 with a trailer premiere behind closed doors and a press release. Game Informer reported that it was 40% complete at that time. Sega uploaded the trailer online when it launched Sonic Team's website on June 30, and allowed journalists to play a demo version in December. Early copies of Sonic Team's Phantasy Star Online, released in Japan in December and worldwide in January 2001, were bundled with the demo. It features the opening cutscene and level, ending with a trailer showcasing later levels. Sega showcased Adventure 2 further at E3 2001 in May. Archie Comics published a brief adaptation in its Sonic the Hedgehog comic book, though its creative team was unable to adapt the story in full due to Sonic Team's desire for secrecy; they were only able to work from the demo and a few screenshots.

Adventure 2 was initially set to be released in February 2001, but was ultimately released in North America on June 19 and worldwide on June 23. The worldwide release coincided with Sonic tenth anniversary, and Sega marked the occasion in its marketing. In Japan, Sega offered a limited edition "Birthday Pack" for two days that included the game, a gold disc containing Sonic music, a commemorative gold coin, and a 17-page booklet detailing the series' history. On June 30, Sega held a celebration at a Software Etc. in San Jose, California, where attendees could have birthday cake, partake in giveaways, and receive Naka's autograph.

GameCube port
Sonic Adventure 2 was released during a tumultuous period in Sega's history. Amidst competition from Sony Computer Entertainment's PlayStation 2, a lack of support from important third-party developers, and conflict within Sega, Dreamcast sales failed to meet Sega's expectations. Peter Moore, the president and chief operating officer of Sega of America, said the Dreamcast would need to sell five million units in the US by the end of 2000 to remain a viable platform, but Sega fell short of this goal with three million units sold. Moreover, Sega's attempts to spur sales through lower prices and cash rebates caused escalating financial losses. On January 31, 2001, Sega announced it was discontinuing the Dreamcast to become a third-party developer, although it remained committed to releasing first-party Dreamcast software through 2001. The third-party transition made Sonic Adventure 2 one of the last major Dreamcast exclusives and the final Sonic game for a Sega console.

In April 2001, Sega announced Sonic Team was working on a game for Nintendo's GameCube, and Sonic Team opted to keep the project's identity a secret until its reveal at Nintendo Space World in August. Naka liked the GameCube hardware, and advised Sonic Team fans to purchase the console. Shortly before Space World, Sega confirmed rumors that the project was a port of Sonic Adventure 2, subtitled Battle. This marked Sonic first appearance on a Nintendo console, which GameSpot called "an unbelievable milestone of epic proportions". Sonic Team left the single-player gameplay mostly unchanged, but added multiplayer options such as new maps and characters. Battle replaces the VMU's implementation with connectivity with the Game Boy Advance (GBA) game Sonic Advance (2001), facilitated through the GameCube – GBA link cable. Visually, Battle features texture resolution increases, though some textures are blurrier, while colors are brighter. Battle was released in Japan on December 20, 2001, in North America on February 11, 2002, and in Europe on May 3, 2002.

Sales
The Dreamcast version of Sonic Adventure 2 sold more than 84,000 copies during its first week in Japan (a franchise record), and a total of around 500,000 copies worldwide. The Escapist wrote that these numbers were impressive given that the Dreamcast had already been discontinued. However, the GameCube version was significantly more successful: in Japan, it sold almost 50,000 copies during its first month, and had sold 192,186 by December 23, 2002. In North America, it was the bestselling GameCube game between January and August 2002, selling 465,000 copies. By August 2002, it had sold more than a million copies worldwide. Cumulative sales reached 1.7 million, and by July 2006, it had earned $44 million in the US. According to Next Generation, it was the 42nd-bestselling game for the GameCube, PlayStation 2, or Xbox between January 2000 and July 2006 in the US. It is one of the bestselling GameCube games and the system's bestselling third-party game.

Reception
Sonic Adventure 2 received "generally favorable reviews", according to the review aggregate website Metacritic.

In contrast to the Dreamcast version, the GameCube version received "mixed or average reviews", according to Metacritic.

Dreamcast:
 * visuals are beautiful: "Sharp, vivid worlds come to life with lush backgrounds that just dazzle the eyes with amazing detail, while both the main cast and enemies showoff brilliant colors in every hue and shade imaginable."
 * music is even better
 * mastering each character gives variety that makes the gameplay addicting for the full duration
 * "Sonic Adventure 2 continues the Hedgehog's legacy in impeccable form. Brilliantly showcasing marvelous visuals, hip tunes, and a diversity of playable characters, Sonic runs at supersonic speeds to deafening fun. Feel the rush with one of the Dreamcast's last fantastic games."
 * feels sorry for people who don't own a Sega system, never got to experience Sonic's excitement and innovation, "and above all, won't play Sonic Adventure 2."
 * would love to give it a perfect score but there are a few issues, most of them problems from the first game that went unfixed: bad camera, confusing mechanics, bad voice acting
 * camera's somewhat better, it's not an issue in Sonic/Shadow and Tails/Eggman. However, in Knuckles/Rouge it makes finding items annoying, forcing you to guesstimate.
 * SA1's massive world was both a plus and minus, it was fun to explore but easy to get lost. SA2 is straightforward so you no longer have to worry about that too much. However you can still get lost in some levels
 * the English voice acting and script are worse than the first game, if you thought SA1 was bad wait until you play SA2. Thankfully you can switch to the Japanese voices which are much more tolerable, though there aren't any subtitles in FMV sequences
 * despite these problems, SA2 exceeds expectations, it's better than the first game (already one of the Dreamcast's best), Sonic Team has made one of the best Sonic games
 * much faster than the first game, little slowdown
 * level design is excellent, levels are large, Sonic/Shadow's levels are much more involving and bring back the concept of the "correct path" from the Genesis games, "a delightful tempo of action" in chaining button presses and jumps and the like
 * Tails/Eggman levels are very enjoyable, a bit mundane at first but once you get the hover they become much more interesting
 * least favorite is Knuckles/Rouge because not a fan of item hunts, however the puzzles and exploration and difficult swimming sequences make things engaging
 * boss encounters start out sort of boring but get very exciting as the game goes on, highlights the Knuckles boss against a ghost and the Biolizard, the final boss is incredible and DBZ fans will love the ending
 * "The Chao System is so entertaining and so much more complex, I spent a good spell raising my Chao rather playing through the game!"
 * lots of replay value aided by practical stage select, e.g. revisiting Tails/Eggman levels with the hover will open up new pathways you couldn't access before
 * "I really don't know how Sonic Team creates some of the most visually stunning games. Outside of the use of magic, Sonic Team has this incredible ability to make the most out of every bit of memory, creating some of the best textures ever seen in Sonic Adventure 2."
 * Realistic environments, very stable 60 FPS (though the multiplayer mode is only 30)
 * SA2's OST is good though the reviewer misses the old Sonic tracks, wishes like SA1 it had some remixes
 * "If this is the last Sonic game in these declining Dreamcast years, it's satisfying to know that the DC didn't go out with a bang, but with a sonic boom."
 * SA1 was a flawed masterpiece, SA2 disappointingly doesn't resolve its problems
 * Camera remains awful, navigating platforms is often a test of memory rather than skill
 * Criticizes the removal of SA1's hub worlds and their exploration, interactive objects, and NPCs. Made the experience deeper and contextualized Sonic's adventures, its removal is not for the better
 * "But this is a Sonic Team game, and there's invention and vitality enough to involve even the most cynical gamer." Varied gameplay styles complement each other well and ensure the game never becomes stale, Chao has been improved
 * Visually amazing: detailed textures, impressive draw distance, "the game engine handles the cutscenes between Sonic's signature loop-the-loops and vine swings with great aplomb"
 * Plenty of replay value, and while not as inventive as SA1 there's still great moments, like the imagery and set pieces of Green Forest
 * Replay value is Sonic's strongest element, and SA2 "crucially" retains it.
 * "The Chao gardens and subgames lift the title above a mere platformer and make the best use of the DC's VMU functions to date."
 * overall good but it doesn't improve upon SA1's freshness and depth
 * Replay value is Sonic's strongest element, and SA2 "crucially" retains it.
 * "The Chao gardens and subgames lift the title above a mere platformer and make the best use of the DC's VMU functions to date."
 * overall good but it doesn't improve upon SA1's freshness and depth

GameCube:

Aftermath
Development on the next game, Sonic Heroes (2003), began at Sonic Team USA shortly after Adventure 2 completion. Iizuka chose to develop it as a standalone game rather than a sequel to appeal to a broader audience. Heroes became the first multiplatform Sonic game when it was released for the GameCube, PlayStation 2, and Xbox in late 2003. Another 2003 Sonic Team game, Billy Hatcher and the Giant Egg, uses an updated version of the Adventure 2 engine.

Sega's discontinuation of the Dreamcast made Sonic Adventure 2 the last Sonic game that Sonic Team—which had worked with Sega hardware teams to take advantage of their consoles—produced with the benefits of first-party development. Whereas Adventure 2 had been made using proprietary software, Sonic Team USA partnered with Criterion Software to use RenderWare so Heroes could be programmed and ported across platforms. Iizuka described the loss of first-party development benefits as the greatest challenge of the third-party transition, as his team "no longer [had] the ability to control what we need[ed] to make our games". Naka said he had mixed feelings about making Sonic a multiplatform franchise.

Shadow quickly proved popular among fans, so Sonic Team USA retconned his apparent death in Adventure 2 finale to include him in subsequent Sonic games, beginning with Heroes. After Heroes, Sonic Team USA was renamed Sega Studios USA. Their next project was Shadow the Hedgehog (2005), a spin-off starring Shadow that concludes plot threads established in Adventure 2. After developing their final game, Nights: Journey of Dreams (2007), the division was merged back into the Japanese Sonic Team in 2008.

Rerelease
Sega released a port of Sonic Adventure 2 as a downloadable game for the PlayStation 3 (via PlayStation Network) and Xbox 360 (via Xbox Live Arcade) on October 2, 2012, and for Windows (via Steam) on November 20. The port followed a similar reissue of the first Adventure in 2010 and was branded as part of Sega Heritage, a 2012 initiative in which Sega rereleased popular games from its back catalog on modern consoles. The rerelease features high-definition graphics and widescreen support, though some cutscenes are still presented in 4:3. Otherwise, it is mostly identical to the original versions; it lacks the Dreamcast version's online features and the GameCube additions are paywalled as downloadable content. In 2017, the PlayStation 3 version was made playable on the PlayStation 4 and Windows via the cloud gaming service PlayStation Now, and the Xbox 360 version was made backward compatible with the Xbox One.

Legacy

 * https://www.escapistmagazine.com/20-years-later-sonic-adventure-2-battle-might-be-the-seriess-most-important-game/
 * https://www.polygon.com/2016/7/5/12053024/sonic-adventure-2-city-escape-best-song-ever

Retrospective assessments
Sonic Adventure 2 is frequently ranked among the best Sonic games. GameSpot and Kotaku deemed it a satisfying conclusion to Sonic run on Sega hardware, and Game Informer considered it a worthy sequel to Adventure. However, journalists have characterized Adventure 2 as divisive, and the 2012 rerelease received "mixed or average reviews" according to Metacritic. Some fans regard Adventure 2 as the franchise's pinnacle, but others find it unfocused—"a jack of all trades, master of none", as The Escapist wrote.

Common elements of retrospective praise include Sonic and Shadow's levels, the Chao Garden, and the soundtrack. GamesRadar+ felt Adventure 2 increased speed and emphasis on spectacle positively influenced the series. Conversely, its focus on multiple characters with different gameplay styles has been divisive. While IGN praised the gameplay variety, Kotaku noted that many only like the Sonic and Shadow levels; retrospective reviewers have criticized the other characters' as frustrating and cumbersome. Game Informer found Tails and Eggman's levels fine, but Knuckles and Rouge's annoying; Nintendo Life disagreed, writing Knuckles and Rouge were "entertaining enough" while Tails and Eggman were "rubbish". To TechRadar, the gameplay variety meant the quality of levels fluctuated more than it did in Adventure, though Sonic and Shadow's levels were a significant improvement. Kotaku appreciated the other characters' levels for their immersion, despite their poor quality.

Additional criticism has been directed at the camera for obscuring enemies and platforms, poor voice acting and audio mixing,   and the story. The Escapist and VentureBeat described the plot as nonsensical, Destructoid said it "almost feels like work to get through", and Vice jokingly compared it to a Bob Books take on Armageddon. Nintendo Life felt the plot would have been interesting were it not for the plot holes caused by events playing out differently across campaigns. However, VentureBeat praised the good-vs.-evil presentation as clever and adding unexpected nuance to the villains' motivations, and Rock Paper Shotgun said the story was one of Sonic best despite some melodramatic moments. They highlighted the scene in which Eggman destroys the Moon as considerably more impactful than his schemes in later games.

VentureBeat wrote that Adventure 2 did not hold up to modern standards, finding its camera and reliance on trial-and-error design outdated, and Destructoid said it was only redeemed by how engaging the Chao Garden was. A Vice writer, while playing Adventure 2 for the first time in a decade, said that "[I've] been forced to reconcile my nostalgia with the harsh reality that it is not a terrific game". VentureBeat wrote that it was more worth remembering for its historical significance as the last Sonic game for a Sega console than it was worth replaying. Others conceded that Adventure 2 is flawed, but argued this was negated by its merits. Nintendo Life said Adventure 2 many "bizarre design choices" made it endearing, and Kotaku said it "felt equal parts triumphant and bittersweet... Adventure 2 has plenty of flaws, but you can tell Sonic Team was working hard to build off the best parts of its previous Adventure and play out Sega’s home console era with style."

Following Adventure 2, Sonic critical standing began to decline, which VentureBeat attributed to Sega "depending on stupid gimmicks to sell their most iconic property" following the third-party transition. The Escapist wrote that subsequent Sonic games, such as Sonic the Hedgehog, Sonic Unleashed (2008), and Sonic Forces (2017), attempted to replicate the Adventure 2 format of varied gameplay styles, but failed because they did not develop each style fully. VentureBeat said Adventure 2 alternate gameplay styles were natural additions to Sonic whereas subsequent games', such as Unleashed Werehog segments and Sonic and the Black Knight (2009) swordplay, were not.

City Escape
Sonic Adventure 2 first level, City Escape, has been described as one of the best opening stages in a video game. The level, which serves as a tutorial, depicts Sonic as he escapes G.U.N.'s custody and features sequences in which he snowboards through streets and outruns a murderous truck. Red Bull said it was "[u]nquestionably Sonic finest hour since the [Genesis] days", and Destructoid called it a perfect introduction to modern Sonic gameplay that encapsulates the strengths of the Adventure games. USgamer wrote that Adventure 2 is remembered more for City Escape than anything else, and Polygon said that it "represents the epitome of Sonic the Hedgehog. It's fast-paced, full of secret pathways, and more than a little absurd."

Sonic Generations (2011), which commemorates the franchise's 20th anniversary, features reimagined versions of levels from past Sonic games. The version released for the PlayStation 3, Xbox 360, and Windows includes 2D and 3D reimaginings of City Escape to represent Adventure 2. The 2D version features the "Classic" iteration of Sonic racing the truck as it moves between the background and foreground, while the 3D version features shortcuts that take advantage of Generations new mechanics. Kotaku regarded Generations City Escape as one of the most impactful moments of 2011, and PCMag considered it a highlight, a "prime example" of Sonic Team drawing inspiration from the franchise's history.

Polygon considered "Escape from the City", the level's theme song, the Sonic franchise's peak, with an energetic composition and hopeful lyrics that they felt encapsulated Sonic's character. The song was remixed in Sonic Generations and featured in the Mario & Sonic at the Olympic Games and Super Smash Bros. series of crossover games. Senoue worked with the band Hyper Potions to produce an Irish-themed remix as part of a collaboration between Jacksepticeye and the Sonic social media account on St. Patrick's Day 2020. It was also featured as a selectable song in Sega's Samba de Amigo: Party Central (2023), a rhythm game which includes a City Escape-based stage. Poley described the song as his biggest hit, though he does not receive any royalties.

Influence
Sonic Adventure 2 GameCube port introduced Sonic to a new audience of Millennials and, alongside the compilation Sonic Mega Collection (2002), allowed it to build a new fanbase following Sega's third-party transition. For this reason, The Escapist regarded it as possibly the most important Sonic game and said that while later Sonic games were better, "[they] didn’t do nearly as much to energize or even create a new fanbase". Additionally, the GameCube port paved the way for a closer relationship between Sega and Nintendo after a decade of console war hostility. Several subsequent Sonic games were exclusive to Nintendo platforms and Sonic appeared alongside Nintendo's mascot Mario in the Mario & Sonic and Super Smash Bros. games.

Sonic Team continued the gameplay style established by the Adventure games in Heroes and Sonic the Hedgehog before going in a new direction with Unleashed, which was conceived as a sequel to Adventure 2 before becoming a standalone game. Adventure 2 was the first Sonic game to feature rail grinding, a mechanic used in every subsequent Sonic game. Sonic Frontiers (2022) features levels that recreate the layouts of the Adventure 2 stages Metal Harbor, Green Jungle, and Sky Rail, and Sonic's Soap shoes are available as DLC. Journalists have noted that an Adventure 2 sequel is a popular desire among Sonic fans, though Iizuka believes such a game would not advance the series' design.

According to PC Gamer, Shadow became the most famous modern Sonic character. In 2005, Naka said Sonic Team had determined Shadow was the most popular Sonic character excluding Sonic himself, a finding reaffirmed in a 2009 Sega poll. Sonic Generations includes Shadow as a boss, and the Nintendo 3DS version includes a fight against the Biolizard. A 2024 rerelease of Generations for the PlayStation 4, PlayStation 5, Xbox One, Xbox Series X/S, Nintendo Switch, and Windows adds Shadow-themed content inspired by Adventure 2, including the Biolizard fight and city and Final Rush levels.

The plot of Adventure 2 was adapted in the second season of the anime series Sonic X (2003–2006). The Japanese voice cast reprised their roles for the adaptation, while the licensing corporation 4Kids Entertainment, which handled the American localization, hired a new voice cast for the English dub. The live-action feature film Sonic the Hedgehog 3 (2024) draws inspiration from Adventure 2. "Live & Learn" is featured in the film, and its logo incorporates elements of Adventure 2.

development sources

 * https://www.ign.com/articles/2001/06/04/interview-with-sonic-adventure-2-director-takashi-iizuka
 * https://info.sonicretro.org/Yuji_Naka_interview_by_Times_(September_13,_2001)
 * https://www.ign.com/articles/2001/02/02/interview-with-sega-legend-yuji-naka
 * https://info.sonicretro.org/Dreamcast_Preview_-_Sonic_Adventure_2_(Game_Informer,_July_2000)
 * https://www.gameinformer.com/interview/2022/04/07/sonic-team-looks-back-at-the-blue-blurs-first-30-years

take a detailed look at

one tidbit in the shmuplations Heroes interview

Sonic Channel interview translations
 * https://browniehideout.wordpress.com/2022/07/11/creators-interview-006-maekawa-shirou/
 * https://www.sonicnotes.info/2006/09/shiro-maekawa-interview-adventure-2-sonic-channel.html