Didn't finish it unfortunately, but still great. Left shift to spawn copies of yourself, that you can click on with the mouse to control!
In game level editor! (press E) F5 to save the level, F9 to load, use the mouse and click to place and remove tiles, hold space to make grassy blocks, hold left alt to move the exit sign about. Plus and Minus to cheat and skip levels.
Made in XNA.
Good fun to finally make a platformer :)