I have two problems with this game: variety and difficulty.

For the difficulty you could try spawning more blocks the higher your score is or forming lines with the blocks. Another option could be that you need to balance the platform.

For the variety you could have played with things such as different sizes, colors, objects or effects such as speed up.

With these problems sorted this game could have potential.

I like the idea controlling the environment and not the "player".

Just missing some variety later