PLATFORM RACING 3
Check it out guys, this is a really fun, online, side-scrolling platformer, where you can draw your own levels. You can draw water, bad guys, ladders -- anything you can set your mind to. Also, if you don't like drawin yourself you can just play other user-made levels. You can play by yourself, or up to 8 players! You can share blocks with people and there is even a cool deathmatch feature.
LINK HERE:
http://www.sparkworkz.com/platformracing3/