Astrolabacus

Ball-in-Track Puzzle · U.S. Patent 5,645,278 (Harris, 1997). Six segments (RR, GR, BB, GB, YY, GY) with two tunnels each. Twist cycles B→R→Y; Flip turns it over (state 1↔2) — six configurations in all. The 18-ball loop shifts. 36 balls, 9 each.

Controls

9
9
9
9
State B2
★ Solved
Grab a glowing ball and drag along the loop to shift it · Twist / Flip to reach the six states · drag empty space to orbit