Also worth saying is the stop lights need to have settings, ie. timed, switch after a certain amount of cars, be able to let each direction go one at a time, etc.
For the best game ever add bridges (maybe with ships that have to pass under occassionally), one way streets, traffic circles, 4 lane highway tiles, etc.
Incredible game, amp up the complexity, zoom out and coordinate highways and everything, suburbs to cities, etc. Make it more sandboxy, and you got a flash game phenomenon.
Really legitimately enjoy the game, but I wish everyone would include keyboard controls for games like these as well as mouse, these are always a PITA on a laptop.
Ok solution to 11: Drop purple in the tube second from the left, drop green into the tube second from the right and then -immediately- drop blue down the middle tube before the green gate closes. Drop yellow into the tube second from right, then red down the middle, then orange on the rightmost tube, and finally pink down the first. Such a fiendish level, but if you follow those instructions you can get it first try.
My previous comment however is not the -easiest- way to complete level 11, which is just to trigger the purple gate first and then drop yellow in the second tube from the left. Green then can be put in by dropping it down the tube second from right.
On level 11, you can actually put the yellow ball in first. Drop it in the second tube from the right, if you do it right it should bounce up over the lip, off the wall and onto the flat surface. It will then roll all the way to the left and bounce off the opposite wall into the yellow chamber.
This game is actually incredibly fun, dont let the rating scare you, if you like this kind of game, you'll enjoy this game. Keep it up, lets see a sequel!