Nice little puzzle platformer! I really enjoyed playing it. The graphics aren't the prettiest to look at. The music is simple, but effective to the tone of the game. I would have gone with solid colored platforms instead of a checked pattern, but that might just be a personal choice. There are a few things that would make the presentation better. Making sure your game's executable is identifiable is one. There's also a bug when you hit a platform with your head in the game. I had to restart the whole game because I was stuck to a platform. A pause menu would've been super helpful in order to restart a level when that happens. Overall, I thought the level design was solid! The switching mechanic is seamless with the jump controls. The Z-key works really well for switching. Anyways, I really enjoyed playing it, and I hope to explore the game a little more when I have time to do so.