Its prety clean and simple, like a popular mobile game. The only think that its probably a little anoying is that there's no option to change the controls, and the hey to go down (X) is above the key to go up (space).
Is like inverted Y of mouse XD
Also, I put my keyboard on my back like the inverted Y mouse and the controls feel so natural! (But I'm also feel stupid on that pose XD)
But overthise that, the game is so great!