@Pappenheimer: i know - but the contest was limited to 50 MB! so i will definitly create some more levels!
@broozar: you can Restart the level with pressing key "R" , i don't wether a flip-function is needed...
i have no problems with overlit, perhaps it is the graphic-card - yours, mine???
In my final version i will include a menu with gama-settings and s.o.!