The aliens have invaded, and its up to you to stop them.
NOT like other physics shooting games. Lots of cool interactive elements. LOTS of one shot, level explodes in glorious destruction fun! Also:
-110 levels:
- Collect stars to unlock new cannons
- Beat the game to unlock a bonus game "RUN!"
- Zero-G physics! Blast a giant metal girder into 300 aliens faces!
- Chain reaction bubble levels
- Standard levels like in the original Cannon