Loved it! The atmosphere with the fog and block based levels look great. However, i think the puzzles (the platforming, minesweeper-esque puzzle and the image shifting puzzle) take a bit too long to solve, and the way they increase playtime can frustrate players. Don't forget to balance stuff up in games, like how there is a puzzle sequence after an action sequence in some games (given that this game isn't based on action, this example might be a bit far-fetched). You could show your story, or let the player be free with the environment, just to equalize the puzzles. 4/5