Infinite Undiscovery (インフィニット アンディスカバリー, Infinitto Andisukabarī) is an action role-playing game developed by tri-Ace and published by Square-Enix exclusively for the Xbox 360. The game is due out during September 2008 in Europe, Japan, and North America. This marks the first attempt by Square-Enix to release a game in all 3 regions simultaneously.

According to tri-Ace co-founder and R&D programmer Yoshiharu Gotanda, this game is set to contain 10 years worth of ideas that can finally be realized by the power of the Xbox 360 and that with it, "RPGs will undergo a true evolution." tri-Ace wishes to achieve this by putting the player through "situational battles" that will lead to "unknown discoveries" and cause permanent changes to the world.