Fun, innovative and original, I love it!
I totally think this has tons of potential, I only quit when the letters stopped appearing. It was already pretty hard to focus and get it right, then it just seemed too hard.
You might want to experiment with the speed of raising/lowering the platforms, see if the game is more fun when it's maybe, four times the speed, or if it's just too easy then.
But yeah, good work! I enjoyed it.