Blender.
Photoshop.
Super meat boy is probably one of the best games out there, it is like all the hardcore games of the 90's. Tought I'll make this render as a small tribute to this awesome game.
The trees are made using a low poly modeling technique of PigArt, so big thank to this guy fir his awesome tuts.
The grass is modeled, and then just used in a particle system.