How to play
- Swap two neighboring gems only when the move creates a match.
- Build rows or columns of matching gems to remove them.
- Look beyond the first match for cascades and moves that open the lower board.
What this game practices
Supports visual scanning and planning several consequences ahead. Random refills affect available moves, so the score mixes decision quality with chance.
How we checked it
Open-source HTML5 game reviewed in the local coolmath build for startup, primary controls, restart flow, narrow-screen fit, console errors, failed requests, and third-party network activity. Upstream telemetry is disabled in this self-hosted copy.
Open-source license and attribution
This self-hosted game is adapted from Web Games by mashukui and distributed under the MIT License. coolmath disabled upstream telemetry and records its local changes in the open-source notices.
Reviewed by coolmath Editorial Team · Updated 2026-10-09