It's pretty short, but it has an interesting idea!
The controls at first feel a bit odd, but after a short time of playing, they become pretty smooth and responsive. The main idea of the game, is innovative, and it makes for a fun gameplay! It requires you not only to figure out the solution, but also requires you to quickly coordinate both of the blocks, in order to complete the levels, which aren't too hard, but still entertaining!
The only two issues I had with the game, is that perhaps the red block is a bit too fast, which sometimes makes it hard to place the yellow bumper in the right spot. The other issue, is that it's a bit too short, I finished all 12 levels in about 15 minutes.
It could receive a bit more of polishing, but other then that, it's a pretty good game!