The game is really cpu hungry, as every frame results in at least some hundred random calls ^^
Yes the background is independent from the gameplay - in fact the whole 'game' is just about the background because i found it interesting to have a dynamic background - in fact the intention of the game and it's countdown, the limited play time and no real goal or points - was what a player would do in a game which in fact is no game in the classic sense - no goal, no points, no competition(thus not having at any time the feeling - it would have been better if i had done that...) so to say. In fact increasing the game time to infinite, maybe removing the music and sending the results to a server would be interesting - so one could see after which time the player would just close the game, or just stop moving the ball...On the other hand, the countdown and the time limit the player has, should keep him longer in the game than he normally would i guess...
It's interesting because there aren't really many non-competitve games (in the truest sense) afaik (at least i don't know any) - and after all, if the competition is taken from a game, only the sensual experience could keep the interest of the player i think.
The approach of audiosurf and beat hazard is an interesting one, they include music that one really likes - your own ^^, but are still totally competitive, an interesting idea would be to create some kind of audiosurf or beat hazard, with no enemies and no points, just for the visual and audio experience so to say.... - but as soon as the player would interact in the game it would become competitive i guess, because then the player has options and an option can result in the feeling of 'damn the other option would have been better'... so are non-competitive computer games with interaction of the player even possible ?