Its simple! Collect the green and avoid the red! Each game is complete generated at random. Now with an interactive menu! Try and unlock all of the available colors and difficulties. You can change the color of the player once you unlock it with enough total points. You can also change the difficulty once you unlock them. The difficulties increase the randomness and amount of bubbles spawned in every game. You can access the unlocks and the audio settings by selecting the score in the home screen.