Concentration
Concentration is a picture matching game for 1 to 6 players that takes about 10 minutes. Flip two face-down cards — match two cards with the same picture, to keep going. Free. In-browser. No account.
Concentration in 30 seconds
- Set upTake two copies of each of 26 emoji pictures, shuffle the 52 cards, and lay them face down.
- Take turnsFlip two cards. A match is yours and you flip again; no match and both go back face down.
- EndThe game ends when every card has been taken.
- WinWhoever holds the most pairs wins. A tie for the most means everyone tied wins; if everyone ties, it's a draw.
At a glance
| Item | This game |
|---|---|
| Players | 1–6 players |
| Play time | About 10 min |
| Type | Cards |
| Ranked play | No |
| Practice against the CPU | Yes |
| Price | Free (no account needed) |
| Rights holder | A public-domain classic game |
| Last updated | 2026-10-13 |
How to play Concentration online with friends
- Tap "Play with friends"A party is created with a 6-character code. No account is needed.
- Send a link or QR codeShare it on LINE, or just read the code aloud.
- Everyone opens it in a browserOnce 1–6 players have joined, the host taps "Start".
Rule highlights
Setup, play, winning, and house rules
Setup
- One to six players with 26 emoji pictures chosen from a palette of 48, two copies of each: 52 cards total. The emoji deck has no jokers.
- Shuffle the deck and lay every card face down on the table. Once laid out, cards never move.
- A party can shrink the deck to 36 or 24 cards. Choose Playing cards to add two jokers or change matching to same rank and color, or same rank.
How to play
- On your turn, flip two face-down cards one at a time. Everyone sees each card you flip; the first stays face up while you pick a different face-down card second.
- If they show the same picture, keep the pair in front of you and flip two more cards.
- If they don't match, turn both face down again in the same spots and play passes to the next player.
- Cards you take leave an empty gap — the rest of the layout never shifts.
Winning
- The game ends once every face-down card has been taken.
- Whoever holds the most pairs wins.
- If two or more players are tied for the most pairs, they all win. If everyone is tied, it's a draw.
- Playing solo records your tries (every two cards you flip is one try, matched or not) — fewer is better.
House rules
| Name | Description | Default | Changeable |
|---|---|---|---|
| Card pictures | Emoji pictures by default. You can also choose playing cards. | Emoji | Yes |
| Deck size | Emoji: 26, 18 or 12 pictures, two copies each. Playing cards: 36 uses A–9; 24 uses A–6. | 52 | Yes |
| Add jokers | Adds two jokers, which match each other regardless of rank. | Off | Yes |
| MatchingMatchingIdentical cards uses two copies of each chosen card face. For rank and color, spades and clubs count as black; hearts and diamonds count as red. Same rank and color, or same rank, uses one copy of every card in the selected rank range. The two jokers form a pair in every mode. | For playing cards, the default is the same suit and rank. You can also match by rank and color, or rank alone. | Identical cards | Yes |
| Time limit | A time limit for flipping the second card. Running out flips the first card back down and passes the turn (adds a try). | None | Yes |
Recommendations
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FAQ
How many players?
One to six. Playing solo turns it into a personal-best challenge for the fewest tries.
How long does a game take?
About 10 minutes with the full 52-card deck. A smaller deck finishes faster.
Can I practise alone?
Yes. Press Play vs CPU for a two-player game against one computer opponent, or start a solo table to chase your own best try count.
Can I write down what I've seen?
Nothing stops you from taking your own notes — the screen itself never shows a history of cards you've already flipped.
Can I play on a phone?
Yes. No app is needed — just open it in a browser. You can join the same party as people on a PC or tablet.
Can two people play?
Yes. This game supports 2 or more players.
Rights holder and physical edition
This is a public-domain classic game. The rules follow the standard reference rules.
Related games
Same type (Cards)
Same player count
Last updated 2026-10-13 · Run by Qdan, Inc.