Just some ideas: - in my opinion it would be better to use 'mousePressed' instead of 'mouseClicked' - maybe instead of just clicking on a bomb, shoot on them with projectiles to destroy them (for that, the bombs should move slower) - the snowmen shouldn't be transparent ;) - bombs that doesn't hit anything should have some effect, too. Maybe decrease score. Or you lose the game when only 5 snowmen/igloos are left, but every bomb is ejected over a snowman/igloo

Nice example of the exponential increase of the speed slider. Quite hard to control in level 7. Once, I lost because the right column was completely filled with blocks, so the door was blocked. Do you always lose if one column is filled or only the right one? I don't know if you want to change that, but I think it would be cool that if one column is filled to the top, a whole row from the bottom is removed (tetris-like). Only if you don't have such a row to remove, you lose.

If you click on instructions and then on back, you start at the beginning of level 1. You could display it as an actor in the current world over all others instead of changing the world. Then pause all other actors until "back" was clicked. In your "sotry", there are some spelling errors. ;)

I guess it would end in a crash or the cars from other side would stop from top speed when the other car drive straight from one side to the other in front of the normal driving car. :D Bicycle riders (who sometimes still crash...) would be killed too because they aren't detected by cars.