3D stickman sky challenge is one of the absolute best runner games. It has full of adventures and offers you unique gameplay. Simple game controls, stunning graphics, and cool sound effects. Have fun! 3D game, stickman runner, sky challenge, running game, arcade game, webgl, unity3d, mobile game, free to play, adventure game, high score, challenging levels, platformer, endless runner, jump, sky, stickman, fun, addictive