Dominoes is a free online tile game you can play instantly in your browser against a computer opponent named Otto, no download, no account, and no waiting for another player. Play with the classic double-six set: 28 tiles, seven dealt to each player, the rest forming the boneyard. Match a tile from your hand to either open end of the growing chain — its matching half touches the existing end, and its other half becomes the new open end. If you can't play, draw from the boneyard until you can, or pass once it runs dry. Play through 15 levels that sharpen Otto's tile choices with every table, from a rival that unloads tiles inefficiently early on up to one that clears doubles fast and reads the boneyard well. Win by playing your last tile first (a "domino"), or — if the chain blocks with neither side able to move — by holding fewer pips in your hand when the boneyard runs out; Try Again deals a fresh hand at the same difficulty any time Otto beats you to it.
How to play Dominoes
- You and Otto each start with 7 tiles from a shuffled double-six set (28 tiles total); the rest sit face-down in the boneyard.
- Whoever holds the highest double leads — or, if neither of you has one, whoever holds the single highest-pip tile.
- On your turn, play a tile whose value matches one of the chain's two open ends; the matching half touches the chain, and the tile's other half becomes the new open end on that side.
- If none of your tiles match either open end, draw from the boneyard until you draw one that does, or until the boneyard is empty.
- Once the boneyard is empty and you still can't play, you pass — if both you and Otto are stuck with an empty boneyard, the chain is blocked and the round ends immediately.
- Win by playing your last tile before Otto plays his (a "domino"). If the chain blocks instead, whoever has fewer pips left in hand wins — a tie is a draw. A level is a single match; clear it to unlock the next level's sharper opponent.
Tips
- Doubles can only be extended from one side each once played, so unloading a double early — especially a high one like 6-6 — avoids getting stuck holding it if that number stops coming up.
- Count how many tiles of each number are still unseen (not in your hand or the chain) — an open end on a number you're holding several of is safer to leave open than one you're nearly out of.
- Holding onto low-pip tiles late is a hedge: if the chain blocks, a light hand often wins even without playing your last tile.
- Otto plays doubles faster and reads the boneyard more precisely at higher levels, so don't assume he'll leave an obviously good end open for long.
FAQ
Is Dominoes free to play?
Yes. Dominoes is completely free to play online with no download, no account, and no in-game purchases.
Does Dominoes work on mobile?
Yes — tap a tile in your hand to play it, so it plays the same on phones, tablets, and desktop.
Can I play Dominoes with a friend online?
This version is single-player against a computer opponent named Otto, so there's no lobby or waiting for another player — you can start a match any time.
What set and rules does this Dominoes use?
The classic double-six set (28 tiles), 7-tile hands, and standard block-style play: match an open end, draw from the boneyard when stuck, and pass once it's empty. A blocked chain is settled by lowest pip count in hand.
How many levels does Dominoes have?
There are 15 levels. Otto unloads doubles and reads the boneyard more precisely with every level, from a rival that plays inefficiently early on up to calculated, tile-efficient play by the final tables.