Really great mechanics--the gravity puzzles and the inability to jump really set this apart from the countless other platform-type games and made it feel very unique, and the puzzles were well-thought-out. I thought it was a lot of fun and I was really engrossed in trying to work out how to get those tricky last memories. I was sometimes unclear about what triggered the level end--some seemed to only end when you either died or got all the memories, while others it was possible to end without doing either of those things? I also wouldn't have minded a signal a little farther in advance warning when gravity was going to change. Overall, very well done!