Corrypt is a brilliant game. It is small scale, you can finish it in a day, but it is densely packed with ideas and challenges and mind-altering epiphanies.
Corrypt starts out as a simple puzzle game, a set of Sokoban logic
mazes wrapped in a light Zelda-esque adventure theme. But as this game unfolds, it playfully twists this structure in a way that must be played to be understood. Suffice to say, you can place Corrypt alongside Portal and Braid as a game which achieves great effects by experimenting with the fundamentals of its structure.
Corrypt is difficult in both senses of the word. It's difficult like a Rubik's Cube and it's difficult like noise music, avant garde cinema, or modernist literature. It is unconventional and uncompromising, but it is also personal and warm, the carefully crafted work of a single individual, and I found it strangely haunting.
Buy it. Play it. When you get stuck, put it away. Let it sit in your pocket, and in your head. Come back to it later and play some more. Eventually it will reveal its secrets to you, I promise. This small game, with its rough edges and its cryptic, self-consuming topography, is beautiful and important, and will repay the attention you give it a thousandfold.