A free app for Android, by Street Farter.

Street Farter X is a game with simple mechanics and goals. In this game, you have to make sure that your neighbor doesn’t hear it when you fart. To do this, click the fart button as soon as a car shows up on the screen. There are two buttons: left and right. The left button allows you to fart quietly, while the other allows you to do it vulgarly. You can also use the right button if the car’s sound is loud enough to muffle the sound of your fart.

There are multiple levels and locations for you to play in this game. Moreover, you can collect various characters and customize them.