Space to clear all the bananas. Press C to clone the banana, and hold it to lag the game beyond all reason. Right shows a white background, left shows even more bananas. This game is based around audio, it gets more insane if you take it somewhere loud, rub the microphone, scream for no reason, etc.
i just googled banana transparent for the banana, everything else by me update log: fixed a bug where the banana would not move when in a silent area, it now moves at one pixel when silent