After completing your first mission (codenamed 'Green Cave') you are sent in your iCopter to search a suspicious cave (oddly codenamed 'Green Cave II'). Could there be more to this cave than meets the eye? Use the mouse to go up, you will accelerate by yourself. Hit blue for shield, red for speed, and yellow for points. Avoid green blocks and other things you may discover. Download for better playing quality. Red power-ups can be useful, but they can make you crash if you are not expecting them. Blue power-ups will let you pass by top and bottop barriers, too!