It's a good idea but I would improve a few things
1 - You should change the color or the camera, is hard to see where the player can run with the current color + camera.
I would change the camera, the colors are very great.
2 - You should warn the player about the blocks that is going to fall, it's unfair at the moment
3 - The powerup somethims spaws at places that are impossible to reach>
it's a cool game, with some polish it's going to be great