Yes the game is a bit short however I love the idea and the implementation, for example that the player block won't be switched. The asthetics are minimalistic and exactly what i like. Please continue working on this game because i think your idea and implementation has alot of potential. I would make the level more horizontal since dropping all the way to the bottom from nearly touching the last block doesn't appeal nice to the player. The horizontal design would also allow you to implement checkpoints which fixes the probelm above (Just an idea). Keep up your work!