I played through all the levels—it was pretty fun. I made it up to difficulty level 5, but I could only finish one of them, lol. There are levels that require math; I think a little math is fine, but if it’s meant to appeal to the general player, it shouldn’t go as far as Fibonacci sequences. You can increase the difficulty by limiting the number of pieces you can place.
For example, if you only go through the left tree on the map, after a while the piece needed to pass that level hasn’t unlocked yet. So, if the required pieces haven’t unlocked, you could prevent the player from playing that level.
For instance, I passed the level I completed on difficulty level 5 this way—though maybe that wasn’t what you had in mind.
But I really enjoyed playing it.
