- Notable game behavior: If you make an incorrect match, the cards will flip back over after 1 second. However, if you click on a card while the incorrect match is still face up, nothing will happen.
- Change the game behavior to a queue of cards to flip over once the incorrect match is flipped back over, instead of just waiting for the cards to flip back over.
- Expand the game to include a stopwatch.
- Expand score to include number of correct and incorrect matches.