http://www.stencyl.com/game/play/27885This was a demo to test the ability to slide off slopes in my next game, known as Chihuahua adventure.
Controls are standard platformer controls. Z to jump, X to run.
Enter to restart if you get stuck.
The way this works is quite complex, the game sets your friction if the corner of the actor was hit, it then detects if you're stuck on the platform, and slides you down!