Crystal Defenders R2

Crystal Defenders is a tower defense video game by Square Enix. The game was originally released under the title Crystal Guardians for mobile phones. Versions for the iPhone OS, WiiWare, Xbox Live Arcade, and PlayStation Network were later released under its current title. The PlayStation 3 and Xbox 360 versions are enhanced ports of the iPhone OS version. A PlayStation Portable version, also based on the iPhone OS version, was released on October 29, 2009. The WiiWare version was released in two episodes, R1 and R2.