Creative puzzle game! I enjoyed it and I was quite sure I would be stumped, but a little trial and error starts to reveal how the mechanics work. Stepping on platforms to keep them from going up is a lifesaver! Made it a lot less frustrating that there wasn't just one single solution to the puzzles.
As others said, lack of sound and writing will hurt your score, but I rated you high on creativity and gameplay. Better visuals and some nicer feedback mechanisms would make the game a bit more fun and playable.