Emanuele Feronato writes: "This is one of the times I create something so much weird I don’t even know how to name or describe it, but if you have already seen this somewhere, just let me know and I’ll give it a name.
Planet gravity is not a new concept, there is the Angry Birds Space tutorial series ready for you to have a look, but this time the concept is applied to a platformer, where the “planet” is a rectangle and the physics engine is Arcade Physics."