Gravion - Version 4.3 In this mini game you need to shoot down the blue blocks.Beware of the red blocks as shooting them will take away points. The game has 20levels that will entertain you for long, in your spare time.Controls:The menu F1: fullscreenThe menu F2: windowedLMB: ShootCompatibility: All windows.In this mini game you need to shoot down the blue blocks.Beware of the red blocks as shooting them will take away points. The game has 20levels that will entertain you for long, in your spare time.Controls:The menu F1: fullscreen