Short and sweet. There's a lot of potential here. I wish there was more of a ramp up in difficulty over the course of the game. The last level was the only that gave me a bit of challenge (also the demon level but we don't talk about that). One thing is you might want to change the color of the teleports so they don't look like spikes. If you add more complex level you may also want to make it so the player knows which teleporters are paired together