Corrypt

Corrypt is a challenging puzzle game set in a mysterious world, featuring brain-curdling complexity that grows as you explore and solve problems for the strange creatures you encounter. With a simple game mechanic that becomes increasingly complex, Corrypt was named the #1 free puzzle game of 2012 by indiegames.com, leaving players exclaiming "this-is-impossible-oh-my-god-no-it-isn't!" as they progress through its intricate levels.