Green Prickle — as the name suggests, green prickles are the obstacles you must overcome, while a small blue ball is under the control of your fingertip. The ball falls naturally under gravity, and all you can do is give it a precise bounce — once, or at most twice — at the moment it touches the ground. Each bounce is an ultimate test of timing and force. In these fleeting moments of opportunity, can you guide this little blue ball through the dense thicket of prickles and reach the finish line?