Pair Flip

Sixteen cards, eight pairs, face down. Turn two: if they match they stay up, and if they do not, they go back — but now you know where they were. Find every pair inside the turn budget.

Faces are shapes, not colours, so nothing depends on telling hues apart. It runs entirely on your device: 0 network requests, works offline. No ads, no account, nothing to buy, and no betting, money or prizes of any kind.

1. Focus the board — click it, or press Tab until it is focused.
2. Move with the arrow keys, turn with Enter. Or click a card.
3. Turn a second card. A match stays up; a mismatch stays visible until your next move, so you can read it properly.
4. Eight pairs, twenty-four turns. Finishing under budget is the achievement.

How do you get better at a memory matching game?

Stop turning cards at random once you have information. The moment you know where a shape is, your next turn should be a card you have not seen — turn the unknown one first, and if it matches something you remember, you have the pair. Turning the known card first wastes the turn when the second is new.

Why is there no timer on a mismatch?

Because a timer would decide how long you get to read the board, and it would make the game unplayable for anyone who reads slowly or uses a screen reader. A mismatched pair stays visible until you move again. It also keeps the game deterministic — with a timer, the board would depend on how fast you were, and a replay could not reproduce it.

Why shapes instead of colours?

Because a memory game built on coloured pips is unplayable for a colourblind player, and shapes cost nothing. Circle, square, triangle and the rest are distinguishable however you see colour.

Does it work offline?

Yes. Once the page has loaded once, the whole game is on your device.

Is there any money, betting or in-app purchase in this?

None, and there never will be. No currency, nothing to buy, no lives to refill, no wager of any kind.

Can I play it with a keyboard or a screen reader?

Both. Arrows move, Enter turns, and every card announces its state — face down, its shape, or matched.

Four by four, eight pairs, twenty-four turns. The budget is comfortably above the worst case, so a careful player always finishes; beating it by a margin is where the skill shows.

Number Span is the other memory game here — it tests how much you can hold at once rather than how well you can place it.

Bookmark this page (Ctrl+D, or ⌘D on Mac) or install the app — it works offline the next time you need it.