Really addictive experience! I think the screen shaking added to it :D It worked even though it seems that you don't even have a goal or lose condition? Is there a limit or end to it? At some point, I started thinking that there is no much difference in whether I do something or do nothing in terms of progression :D But the action was catchy! Yet I think it would be cool to add at least some strategic or tactical element - to have some reward for doing anything else rather than just spamming random buttons :D