I definitely had fun with this! Although I must say that I agree on this game not really being a puzzle game. For me it was more about memorization. After trying out a few things in the first level with a key I found a way to the exit but not to the key yet. So I had to try and memorize the way to the exit (which was fun as well!). If you want to take it more into the memorization direction I would suggest maybe showing the player the pattern beforehand and then letting them try and see whether they memorized it correctly. Or if you want to make it more into a puzzle, one idea would be to give the player some kind of "cryptic" hint on which teleporter to activate next. I think this has a lot of potential!