All the cards lie face down. Tap a card to turn it over, then tap
another. If the two pictures match, you keep the pair and go again.
If they do not, look hard: they turn back over, and it is the next
player's go. Tap anywhere to turn them back sooner.
⭐ Solo
Clear the table in as few turns as you can. A turn is two cards.
👥 Two players
Pass the phone or tablet. The player with more pairs at the end wins.
🤖 The computer
The computer only knows cards it has seen turned over, and it forgets
some of them: Easy remembers a few, Hard nearly all. Each turn it does
the first of these that it can:
⌨️ Keys
Arrow keys move the ring, Enter or Space turns the card, P or Escape pauses.