I liked this game. It feels nice, it's fun to play ... with (sadly) a notable design flaw. This might not be a problem for everyone, but the reversed controls are so hard to get used to. Normally the directional buttons would be the same something rotates on the top. In this game, on the other hand, they define the rotation on the bottom side.
Overall, this is a pretty fun concept. I liked playing it, but it was infuriating when I died just because the controls felt strange.