Tap a tile to fire its fixed action. After any move, three same-colored tiles in a line auto-clear and chain for combo points. Reach the target score before steps run out — levels are endless and keep ramping up.

Merge tiles upgrade when every neighbor in their shape matches their level (and color, unless marked "any color"). They absorb those neighbors and gain one level — higher-level tiles score far more. If the condition isn't met, they lock gray and block nearby moves until the board changes.

Blast tiles clear tiles in their shape — either matching color only, or all colors. Unlike merge, blasts never lock.