Can you master the swivel by zipping spheres through the puzzle? A true spin doctor uses his or her turns wisely! Practice with precision by turning the swivel this way and that! "Circulate" is in full rotation ... it's a game that's ahead of its time and it allows you to master gravity as you guide spheres through a spinning chamber. Much like nostalgic marble mazes, this game lets you tip, twist, and spin your way into winning!