Play, then understand your next move.
Reversi Online brings a browser board and practical guides together. Play against a computer or share a screen with another person, then follow a rule explanation or strategy idea without installing an app.
An independent browser game. Not affiliated with or endorsed by Othello Co., MegaHouse or the World Othello Federation. References to those organizations identify sources or rights holders. They do not indicate sponsorship, approval or a commercial relationship.
What this version includes.
The game is an original implementation of the standard disc-flipping rules. It includes an 8 × 8 board, a fixed four-disc opening, automatic captures and passes, three computer levels, same-device two-player mode, move hints, undo and local browser saves.
The computer uses a limited search algorithm with an evaluation of the board. It is not described as unbeatable or expert strength. Local two-player mode does not include online matchmaking, synchronized rooms or friend links. There are no accounts, player ratings or paid upgrades in this release.
Independence and trademark notice.
Othello is a registered trademark of MegaHouse Corporation. References to Othello identify the game and rules discussed here. This site does not claim ownership of the Othello name and does not offer an official or licensed Othello product.
The MegaHouse Othello website carries the brand's registered-trademark notice. Our board artwork and diagrams are created for this site. Links to published rules are references, not permission statements or endorsements.
Sources you can follow.
- World Othello Federation: Othello rules supports our explanations of setup, legal moves, flipping, passes and the end of a game.
- World Othello Federation: Othello history provides background on the game.
- Reversi on Wikipedia provides a secondary reference and bibliography for the historical names and versions.
- British Go Association: introductory rules supports the Go side of our comparison.
Pages were reviewed on . Historical claims should be checked against the linked material; the rule pages distinguish the standard rules from this site's casual scoring and interface choices.
Clear explanations, with clear limits.
Strategy notes are editorial advice. A corner, mobility count or positional heuristic is a useful idea to investigate, not a guarantee that a move wins. We avoid invented player reviews, ratings, awards, traffic claims and claims of official status.
The direct answers, page headings, references and structured data describe the same content visible to visitors. A machine-readable site summary is available for systems that choose to use it. It supplements the guides rather than replacing them.
Credits and feedback.
The site uses locally hosted Bricolage Grotesque and DM Sans fonts under the SIL Open Font License. The board interface and explanatory diagrams are site artwork.
The project repository is on GitHub; repository access may be restricted by the owner. Data handling and local saves are explained in the privacy notice.