"This game is very hard." So says developer Andrew Guillen at the outset of Spin the Black Circle. He's right.
It's no more complicated than a hand-held marble maze. Simply spin each level with left and right arrow keys in order to pilot a ball into a hole. The early levels, which introduce the ball's physics and some basic maneuvers, are boot camp. The real game begins at Level 10.
Spin the Black Circle rewards patience and careful attention. You can't brute force your way around its mazes. You have to finesse the ball home. The more trial-and-error attempts you make, the deeper you're drawn into the physics simulation, and the better you'll get. It's surprisingly rewarding. By the time I completed Level 12 (there are 24 in total), I'd reached an almost trancelike state of concentration. And I'd accomplished something that at first seemed impossible.