Because of The Behemoth's relation to the Newgrounds community, almost all of the game's soundtrack is created by the community members (and is available to download for free). Inspired by retro co-operative beat-em-ups of the '90s, the game features an adventure mode for up to four players (either locally, online, or a mixture of both), numerous playable characters and weapons, and light action-RPG elements (allowing players to gain experience and upgrade character stats and abilities). Castle Crashers is a 2D fantasy belt-scrolling brawler developed and digitally published by The Behemoth for the Xbox 360 on August 27, 2008.