It's such a cute little game. :) I loved the game mechanic of being able to teleport. I thought it would make the game too easy to get through but I found it the right amount of challenging. It was engaging but not too frustrating. I was able to figure out pretty quickly what the blue blocks meant but there wasn't a formal introduction to them in the game. I also didn't realize that using the teleporter stopped me mid-fall. I had to figure that out on my own. I would just suggest finding a way to introduce that a bit better.
I loved the graphics and the audio. The audio made it feel really fun. I really liked that you had a background that made the world look bigger.