One of the most polished platformers to date.
The movement, once you get it right, feels very smooth and precise.
It may be hard, but it will never ever take the control out of
your hands to make you fail - the game is fair, or in other words:
The only obstacle is your own incompetence.

The astonishing fluent progression in your skill level with a
very deep learning curve is remarkable.
Getting the hang of a seemingly impossible level and finally bashing
through it with ease and even finishing it is absolutely satisfying.
Well made cutscenes with a very laughable dark humor between the worlds are
just icing on the cake which enhance the feeling of accomplishment.

You may encounter a few bugs, but patches have been rolling out on an almost
daily base.Remapping the controls and a level editor is ought to be patched in soon. Gamepads and keyboards are supported.

I never really played and enjoyed platformers but Super Meat Boy changed
that within hours.