How to play
- Turn over two cards and observe their symbols.
- Remember unmatched positions when the cards turn back over.
- Find every pair while avoiding repeated guesses.
What this game practices
A simple working-memory game with a clear attempt count. Performance can improve through a systematic scanning strategy, not memory alone.
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