Space Invaders, the arcade classic shooter, returns in this innovative new version. The game begins looking and playing just like the familiar game we know, but evolves and changes as you keep playing. Stages change and even the perspective shifts, for a blend of brand new and classic gaming all in one. Unlock new stages and challenges by filling the game's Evolution Gauge. Features integration with Facebook, Twitter, and OpenFeint, where you can compare with your friends and unlock a series of achievements.