Memory Match — the free pairs card game, played against the clock

Sixteen cards face down in a four-by-four grid, eight pairs hidden among them. Turn two cards over: if they match they stay up, and if they don't they flip back. Clear all eight pairs and your time goes on the board. It is the oldest card game there is — concentration, pelmanism, pairs, whatever it was called where you grew up — and the reason it survives is that it is entirely fair. Nothing is random except the deal; everything after that is what you managed to remember.

Runs take well under a minute once you know what you're doing. Your time is what gets ranked, with the number of flips recorded beside it, so you can see the difference between a fast lucky board and a genuinely well-remembered one. Free, no download, and it deals a fresh set of symbols every game.

How to play

• Tap a card to turn it over, then tap a second one.
• A matching pair stays face up. A mismatch flips back after a moment — use that moment.
• The clock starts on your first flip, not when the page loads, so there is no rush to begin.
• Your time is the score; flips are stored next to it. Fewer flips means you remembered more.

The trick isn't a better memory — it's a better encoding

Everyone playing this game is working from the same equipment: roughly four items of visual working memory held for a handful of seconds. The players who clear the board in twenty seconds are not holding more pictures than you. They are holding different things. A picture of a rocket in the third column is a raw image, and raw images decay fast and interfere with each other badly — turn six cards and the first two are already blurring. Say "rocket, top-right" to yourself instead and the same card is now a short verbal label with an address attached, which lives in a different store, lasts longer, and is far easier to search when the matching rocket appears.

The second habit worth stealing is ordered searching. On your very first flips you know nothing, so tapping at random costs you nothing — but from the third pair onwards it does. Work along a row rather than hopping about, because a memory with a spatial pattern behind it ("I've done the whole top row") is one you can audit, while a scattered one leaves you re-flipping cards you have already seen twice. That single change usually cuts more flips than any amount of concentration does.

And an oddity worth knowing: the pair you are most likely to forget is the one you turned up as a mismatch while chasing something else. You were busy confirming a different card, so the second one was never really encoded — it was merely displayed. When a mismatch shows you something new, give it a beat and a name before you move on. That beat costs half a second and routinely saves four flips.

More games

More matching and memory: Mahjong Solitaire, Visual Memory, Emoji Memory, or the Sequence Memory test. Or browse all games.