Reversi Online — the Classic Disc-Flipping Board Game

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Reversi is the classic two-player abstract strategy game played on an 8x8 board with 64 two-sided discs. Black opens from the fixed central four-disc setup, and every move must flank at least one line of enemy discs — horizontally, vertically or diagonally — flipping all of them to your colour. No legal move means you pass; when both players pass or the board fills up, the game ends and the majority of discs wins.

Here you can play Reversi online free, straight from the browser: hit Quick Play to join a table in seconds, or create a room and share its code to play with friends.

→ Full Reversi rules · Reversi glossary · 日本語

Reversi in a nutshell

Two players, one 8x8 board, 64 two-sided discs (dark on one side, light on the other). The game starts with four discs in the centre, same colours on a diagonal (d4 and e5 light, e4 and d5 dark), and Black moves first. A legal move must flank one or more enemy discs in a straight line — row, column or diagonal — and every flanked disc flips. If you have no legal move you pass; if both players pass in a row, or the board is full, the game ends. More discs wins; empty squares left at the end are scored for the winner.

A turn at a glance

Every turn is one of just two things:

ActionWhat happensWhen
Place a discPut a disc with your colour up on an empty square that flanks at least one enemy line; all flanked discs flipWhenever you have a legal move
PassSkip your turn — forced when you have no legal moveOnly when nothing can be flipped

Frequently asked questions

What is Reversi?

Reversi is a classic two-player abstract strategy game on an 8x8 board with 64 two-sided discs. Players place discs that must flank enemy discs in a straight line, flipping all flanked discs; the majority of discs showing at the end wins.

Is Reversi the same as Othello?

Reversi is the original public-domain name of the game. Othello is a trademarked modern variant with a fixed central opening — it is now the standard way the game is played, and it is the setup this site uses. On this site the game is always called Reversi.

Who moves first in Reversi?

Black (the dark discs) moves first, from the central four-disc setup where same-coloured discs sit on a diagonal.

What happens if I have no legal move?

Your turn is a forced pass. If both players pass in a row the game ends immediately and the discs are counted.

How are empty squares scored?

By the common convention used here, empty squares left at the end are awarded to the winner, so final scores always add up to 64 — for example 33–31 from 32–30 with two empty squares.

Can the game end in a draw?

Yes — if both players finish with exactly 32 discs the game is a draw.

Why are corners so important?

A disc in a corner can never be flipped because no line passes through it, so it is permanently stable. The squares diagonally next to corners (X-squares) are dangerous for the same reason: taking them often gives the corner away.

Can I play Reversi online for free?

Yes — play Reversi online free at reversi.yeeqia.com, straight in your browser with no download or sign-up required.

Does it work on mobile?

Yes, the site is mobile-first and runs in any modern browser on Android or iPhone, with full English and Japanese support.