Play 3D tic-tac-toe against various AI opponents. Just gaze at a ball, pinch and drag it to where you want and let go to drop it into the game. There are many play options and game goals. Mix up the challenge against 1 or 2 opponents - they all play differently. • 1 - 5 levels of height • Play your color or any available color • 3 or 4 in-a-row to score • Many more options Experiment to see how they all work.