I can't believe this game is free because it is really really good!
Without giving too much away the goal is to-- well the title says it all.
A simple puzzle platformer where your wits and curiousity is rewarded, or not.
Expect to die a lot. This is not "I want to be the guy" levels of cheap death nor does it feature that many cheap deaths.
It does contain leaps of faith often though and spikes. Lots of spikes.
xbox controller compatibile, small (111mb), and it's free.
I strongly recommend this game and you have absolutely nothing to lose by trying it out.