I made a platformer engine that allows you to climb up the walls and ceiling, as well as bounce on trampolines when you fall onto it but not when you simply walk by it. Plus, you can run and fall faster by holding a button. It's pretty cool.
I totally love this. Will you turn it into a game? 
Most likely, at some point.
Neat, it's more unique than most platformers in that you can climb up the walls
Wow beautiful !
Just a comment: When walking on the ceiling, the sprite turns the wrong way ...