Castle Doombad

Castle Doombad is a 2014 tower defense game developed by Grumpyface Studios and published by Adult Swim Games. In the game, the player controls Dr. Lord Evilstein, a villain who must defend a castle from invading heroes. It was originally released on January 9, 2014, as a mobile title for iOS and Android, and a sequel titled Castle Doombad: Free to Slay was released on July 17, 2014. The game went on to receive numerous "Best of 2014" awards, including Metacritic's "25 Best Reviewed iOS games of 2014", and selected as one of Apple's "Best Apps of 2014". It was announced on March 20, 2023, that Castle Doombad was set to return as a "reimagined and expanded remake" with updated and remastered art, new content, and new features on Steam for Mac and PC.

Gameplay
The player controls Dr. Lord Evilstein, who has kidnapped a local princess. They can construct traps and defenses to defeat heroes from saving her. Traps include minions that attack heroes, automatic traps such as trap doors, and manual traps such as spikes.

Critical reception
The game received "generally favorable reviews" according to the review aggregation website Metacritic.