Thank you for the feedback! It's great knowing you understood and enjoy the feeling of game I was going for!
I fought with myself about leaving the need for backwards paths, but kept it in for the "Loop" theme. I think if I were to continue developing this game I would take out the need for a reverse path.
There is much more I wanted to add, and might, but you're right that it would be nice to have a mechanic that could make the puzzle more challenging. I could probably make the puzzles on 3d shapes the player would have to rotate to solve.
Also, I think I originally saw something about the timer. Yeah, it definitely should count up, not down if at all, to keep the game more relaxing.
Thank you for playing my game! I will definitely be checking yours out, so keep an eye for my comment!