Bad, Worse, This game
The problem with Mulle is that it is extremely plain. You and your crew have done a decent job on the graphics in this (though i would suggest that you redo the elephant main character ENTIRELY). However there is no aim to this, no goal to reach, just a bunch of disjointed platforms, falling from which will almost certainly result in a restart.
Now when you were testing this, im sure you thought you had the map all figured out, and it was good, and whatnot. You must keep in mind that you know the entire map. WE, the users, dont. This leads to constant falling death in this game, which is not only frustrating, but a major turn off to return players
The Elephant character is very ugly, not something you want to control as your 'hero'. I would not only make this more three dimensional (i mean cmon, legs move only, and barely). As well as more aesthetically pleasing. A sharptoothed grin through a trunk just leaves me wondering what you were thinking.
Ive given this a low score, and voted it even lower. In your next attempt, I would suggest more intuitive level design. Also, i cannot stress enough, much more thoughtful character design, and perhaps more controls than left right jump.
All in all, not a terrible attempt, far from the worst ive seen on here. However i think, and i think many will agree, that major work needs to be done here. good luck