O mobile : Tap o the right side of the device to jump right, click o the left side to jump left.
O desktop/web : Click o the right side of the scree to jump right, click o the left side to jump left or Click left ad right arrow respectively.

Your goal is to hit the obstacle which has the same shape as yours. However, if you hit the obstacle which has different shape, then you die.

For iOS:
Safari on iOS 8 and later supports WebGL 1.0, and on iOS 15 and later supports WebGL 2.0.

For Android：
Nearly all of them support WebGL