Reversi

About Reversi

Reversi is a classic disc-flipping strategy game where a single well-placed move can swing the whole board in your favor. You play black against a sharp AI that loves to grab corners and squeeze your position, so every placement matters. The hook is that satisfying moment when you drop one disc and watch a long row of your opponent's pieces flip to your color. It is easy to learn but genuinely hard to master, and it runs instantly in any modern web browser on desktop or mobile with no download, no install, and no plugins to fuss with.

Playing is simple: legal moves are highlighted for you, so you just click an empty square to place a black disc and flip every white disc you outflank between it and your other pieces. Your goal on each level is to finish with more discs on the board than the AI, which clears the level and moves you forward. There are 15 levels in all, and the difficulty climbs steadily as you go. Early boards let you learn the flip mechanic and basic positioning, while later levels pit you against an AI that plans further ahead, defends its corners, and punishes greedy moves.

The key to winning is thinking about position, not just piece count, because the board can flip back against you late in the game. Aim to claim stable corners and edges, avoid handing the AI easy corner access, and sometimes take fewer discs now to control more squares later. Progress saves automatically as you climb the 15 levels, and signing in for free carries your progress across devices and puts your name on the all-time top-15 leaderboard. It is free to play with no account required, so you can jump straight in, replay levels to sharpen your tactics, and chase a spot at the top.