Nearly frictionless physics is just bizarre.
The lack of music or even sound is disappointing.
Collision physics are lacking and there is literally 0 rebound, which is counterintuitive.
The fire doesn't consume the creeper, which is odd.
Your title screen could look more polished, and of course more levels and mechanics could be introduced. I have no idea how far you intend to go with this, but you'll have to go a lot farther to make it into something that raises eyebrows.