Swipe a gem into its neighbour (or tap one, then the other) to line up 3+.

Four in a row makes a Star gem that blasts its row and column. An L or T makes a Flame gem that explodes 3×3. Five makes a Hypercube (the Toonie): swap it with a gem to clear that whole colour.

Cascades multiply your points. Timed is the 60-second Arcade run (a good run earns a few practice coins, daily cap, no cash value); Zen has no clock and saves your board.