ReversAi
By Eccsx (Luunynliny) · MIT license. Source · All credits
About ReversAi
ReversAi is a Reversi variant built around playing against a computer opponent. Trap and flip the AI's pieces to claim more of the board than it does. If you want to practice this classic strategy game without needing a second player, this is built for exactly that.
How to play
Tap an empty square to place your piece and flip any of the AI's pieces it surrounds.
Rules of ReversAi
- Reversi uses the same rules as Othello: outflank a line of enemy discs between two of yours and every disc in that line flips.
- The board is 8x8 and opens with four discs in the centre. Dark moves first.
- A move is only legal if it flips at least one disc. Green dots on this board show you where those moves are.
- If you have no legal move, your turn passes to the opponent.
- The player with more discs when no moves remain wins.
- The disc count during the middle of a game means very little. Having fewer discs but more options is usually the stronger position.
Controls
- Tap a square with a marker to place your disc
What makes it worth playing
- Reversi against a computer opponent
- A strategy overlay marks corners, edges and the risky squares beside them
- Move indicators show every legal placement
- An evaluation bar shows who is actually ahead
Screenshots
Captured from this build on 2026-08-26.
Tips from playing it
- Play the corners and the safe edges, and let your opponent take the middle.
- Watch the evaluation bar rather than the disc count. They often disagree.
- A move that gives you lots of discs but opens a corner is usually a mistake.
Why this game is here, and what we changed
Chosen because it is genuinely good and its licence (MIT) allows us to host and modify it, which we verified in the project's own files. We host it on our own servers, so it loads straight into the game with no third-party ad code and no pre-roll video. Its board was a fixed 508 pixels wide, so a phone cut off the last two columns. We made the board size follow the screen instead. No game logic was touched. It arrived using a gameplay screenshot as its icon, which looks poor at tile size, so we drew it a proper one. We played it through on a real phone-sized screen on 2026-08-26 before publishing this page, and the screenshots above are from that session rather than from the original project.
More on how we pick and fix these: what we changed in the open-source games and how we test a game.
- Category
- Board
- Plays in
- Your browser, no download
- Orientation
- Landscape
- Players
- One player against the computer.
- Difficulty
- Easy to start, the opponent punishes greedy play
- Typical session
- 5 to 10 minutes a game
- Last tested by us
- 2026-08-26
- Created by
- Eccsx (Luunynliny) (MIT)
