Very fun concept and so far I like this pizzle rewind concept the most of the ones I played. Sadly I had some bugs plaguing my playthorugh. The crates wouldn't reappear on rewind (all at the start of the game) and I didn't need the key cards, but that didn't stop me from trying the puzzles anyways. Happened on the windows build. Can't wait to try this again when you worked out all the kinks, I really like it.