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Select a dotted square to make your first move. This free computer game runs in your browser, with no account or installation. Black starts, the computer responds as white and every capture is handled automatically.
Choose a comfortable challenge.
Easy considers the immediate position and varies between a few candidate moves. It is useful when you are still learning to spot legal placements and recognize a corner. Easy can still capture a corner or win a game, so treat it as a gentler opponent rather than an opponent that always loses.
Medium searches a few moves ahead within a short time limit. It balances board position, available moves and exposed discs. Start here if you know the rules and want an opponent that makes more deliberate replies.
Hard searches deeper with a larger thinking budget. Near the end it attempts to look farther through the remaining moves, but a time limit still applies. Hard is not a claim of expert or world-champion strength. You can change the level during a game; the next computer turn uses the selected setting.
Make practice a little more useful.
Show moves marks your legal placements with small dots. Switch it off when you want to find the captures yourself. The last move has a small contrasting marker so you can follow what just changed. Black and white scores count the discs currently on the board.
In computer mode, Undo returns to your previous decision, taking back the computer's reply too when it has already moved. You can also undo while the computer is thinking. New game clears the current board after you confirm, while keeping your preferred level and hint setting.
Come back to the same position.
The game attempts to save your current board, move history and preferences in this browser's local storage. Returning on the same browser can restore it. A different device, private browsing session or cleared browser storage will not share that saved game.
The computer mode and the two-player page have separate saved boards. Nothing is uploaded as a player account or cloud save. If storage is unavailable, the game remains playable and displays a notice that saving is unavailable.
A practice partner with clear limits.
The opponent is a local search algorithm, not a connection to a hosted generative AI service. Its computation normally runs in a Web Worker so the page stays responsive while it thinks. It does not send your moves to a model API.
No game engine can make a legal move when none exists. The rules require a pass in that case, and this game handles it automatically. Play ends when neither color can move. For ideas to test against the computer, read our Othello strategy notes, or review how captures work.