Abyss Odyssey is a platform action-adventure game developed by ACE Team and published by Atlus. It was released in North America on 15 July 2014 and Europe on 16 July 2014 for the Xbox 360, PlayStation 3, and Microsoft Windows. An Enhanced Edition, titled Abyss Odyssey: Extended Dream Edition, will introduce competitive multiplayer, as well as new types of enemies and bosses to the game, is scheduled to be released for the PlayStation 4 in the future. A "nightmare" difficulty mode will also be included in the Enhanced Edition.
The game's plot follows a set of heroes who fight to reach a warlock whose dreams are infecting reality. Abyss Odyssey combines elements from multiple video game genres and has a unique art style based on the Art Nouveau movement.