I took the time to try out your game on my phone, and I must say it is the perfect platform for this kind of games. Generally this is one of those games that are ideal to pull out during public transportation to kill time, so yeah good mobile game. I would say I got a bit confused about the UI at the start, I kept pushing the word that said "Play" and it took me some time to realize that I had to push the button in the bottom with the corresponding color. Also I never really found a reason to turn off the red button in game, but other than that I don't have much to say, I did end up playing several rounds