I played this game on my stream (VOD).
I really like the concept of the game, it's simple and elegant. However, I had a lot of difficulty with the controls. Sometimes, moving up (from the initial state) was smooth and great, and other times it felt sluggish. I couldn't figure out why the differences were happening. It felt like I was fighting the game controls more than I was playing the game, if that makes sense.. the couple of runs where the controls were good and I died, it was fun, because I knew it was my own fault and I could do better. The other times, I was frustrated because I was fighting the game controls :(