If playig sigle:

Move: "W,A,S,D," or "ARROW KEYS" or "MOUSE"

If playig two player:

Player 1:
Move: "W,A,S,D"

Player 2:
Move: "ARROW KEYS"

Sky Balls 3D invites you on an adventure as you travel through the sky with rolling balls and test your reaction skills. Keep the ball on the track without letting it fall and watch out for obstacles, traps and gaps! Collect coins and keys along the way to get new ball skins and sky-boxes. You can play the game in 1 player and 2 player modes.

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