List of massively multiplayer online games

This is a list of notable massively multiplayer online games (MMOG), sorted by category.

Action

 * Armored Warfare
 * Cartoon Network Universe: FusionFall
 * CrimeCraft
 * DC Universe Online
 * Infantry Online
 * SubSpace
 * War Thunder
 * World of Tanks
 * World of Warplanes
 * World of Warships

Browser games

 * Agar.io
 * Bin Weevils
 * Blood Wars
 * Castle of Heroes
 * Club Penguin
 * Command & Conquer: Tiberium Alliances
 * Dark Orbit
 * Empire & State
 * Hattrick
 * Ikariam
 * Illyriad
 * Imperia Online
 * Little Space Heroes
 * Lord of Ultima
 * Miniconomy
 * Moshi Monsters
 * National Geographic Animal Jam
 * NEO Shifters
 * Ogame
 * Omerta
 * Pardus
 * Pirate Galaxy
 * Planetarion
 * Poptropica
 * Realm of the Mad God
 * Runes of Magic
 * Samurai Taisen
 * Sentou Gakuen
 * Slither.io
 * Smallworlds
 * Surviv.io
 * Tenvi
 * Terra Militaris
 * TirNua
 * Transformice
 * Travian
 * Tribal Wars
 * Twin Skies
 * Urban Dead
 * World of the Living Dead: Resurrection

Browser games with 3D rendering

 * Battlestar Galactica Online
 * Dark Orbit (Since 2015)
 * Dead Frontier
 * Family Guy Online
 * Fragoria
 * Free Realms
 * RuneScape
 * Tanki Online

Building games

 * Active Worlds
 * Wurm Online

Exploration

 * Uru Live

Puzzle

 * Yohoho! Puzzle Pirates

Social games

 * Active Worlds
 * Animal Jam Classic
 * Bin Weevils
 * EGO
 * Flyff
 * Free Realms
 * Furcadia
 * Habbo
 * JumpStart
 * Nicktropolis
 * OurWorld
 * Pirate101 (sister game to Wizard101)
 * Red Light Center


 * Second Life
 * The Sims Online
 * SmallWorlds
 * Star Wars: The Old Republic
 * Tanki Online
 * There
 * TirNua
 * Toontown Online
 * Transformice
 * Virtual Magic Kingdom
 * Virtual World of Kaneva
 * vSide
 * Wizard101 (sister game to Pirate101)
 * Woozworld

Space simulation

 * Dual Universe
 * Elite Dangerous
 * Eve Online