Play Reversi (Othello) against a smart AI right from your browser toolbar. Three difficulty levels, compact design, no internet needed.
Minimax algorithm with alpha-beta pruning, ported from the Reversi AI Assistant project. Strategic position evaluation and corner control.
Easy, Normal, and Hard modes. AI search depth scales from 2 to 6 plies for casual or challenging play.
Only uses local storage to save your game. No access to your browsing data, tabs, or any personal information.
No internet connection required. The entire game runs locally in the extension popup — play anywhere, anytime.
Fits neatly in a small Chrome popup window. Play a quick game during breaks without leaving your current tab.
Click the icon and start playing. No setup, no accounts, no loading screens. Piece flip animations and move hints included.
Play a live demo right here — same AI, same board, same experience as the extension.
💻 Live game — fully playable
Click the button below to open Chrome Web Store.
Click Add to Chrome and confirm the installation.
Click the ♟️ icon in your toolbar and start a game.
🔒 Privacy-first design: This extension runs entirely offline. No data is collected, stored, or transmitted. No network requests, no analytics, no tracking. Read our privacy policy →