Short but quite fun. Congrats!

(tested on GBA SP)

Good puzle game.

This is fun. I played through the whole demo. I like the way you changed up the levels and challenges. I like the graphics too. I think it would be really cool if you used an extra color to add anti-aliasing to the graphics since there are only 2 colors per sprite/tile

This was really neat! I look forward to more levels!

The difficulty ramped at a nice pace. The last levels with the half-step block were good challenges!

The music started to drive me a little crazy, but it's the right type of song for the genre I think. Something a bit more kinetic might match your aesthetic though.

All in all, it was really fun!