I've tested your game. The main menu's UI is beautiful, I love it : it's just simple, but great ! However, I couldn't understand what I had to do in the game, so I was just moving around in a spinning wheel (a little bit complicated for an azerty user, on a game designed with WASD, haha). The best piece of advice I can tell you to improve your game would be to make it more clear about what we have to do ! :)