The game is a bit slow, I wish the little circle moved faster. But if I understand correctly, this game was made completely from scratch with no engines used? That's really cool, respect for that. However, after the 4th or 5th level, the game crashed — was that the last level or did something break on my end? I'd love to finish the rest of the puzzles, it feels like I've only completed the tutorial.Anyway, good job!