Reversi 3D
Trap, flip and take over the board. The classic disc-flipping game, played with real 3D discs against the computer.
Reversi 3D is a free board game game you can play instantly in your web browser on a phone, tablet or computer, with no download and no sign-up. Flip your opponent's discs and own the board. Othello rules, four computer levels, real 3D discs.
- Genre
- Board game, Strategy
- Controls
- Tap a glowing square
- Plays on
- Phone, tablet and computer
- Price
- Free, no account needed
How to play Reversi
The game starts with four discs in the centre, two black and two white. Black moves first. On your turn, place a disc so that one or more straight lines of your opponent's discs are trapped between your new disc and another of yours. Every trapped disc flips over to your colour.
- Lines can go any way: across, up and down, or diagonally, and one move can flip several lines at once.
- Every move must flip: you can only play on a square that flips at least one disc. The glowing dots show where you can play.
- Passing: if you have no legal move, your turn is skipped and the computer plays again.
- Winning: the game ends when neither player can move, usually when the board is full. Whoever has more discs wins.
Controls
| Action | Phone or tablet | Computer |
|---|---|---|
| Place a disc | Tap a glowing square | Click a glowing square |
| Turn the camera | Drag the board | Drag with the mouse |
| Flat view | Top view button | Top view button |
| Get a hint | Hint button | Hint button |
| Take back a move | Undo button | Undo button |
Computer levels
- Easy: grabs whatever looks good right now. Great for learning.
- Medium: knows corners are valuable but misses deeper plans.
- Hard: searches about six moves ahead and plays the ending well.
- Expert: searches as deep as it can in under two seconds and plays the last moves perfectly.
Reversi strategy tips
- Take the corners. A disc in a corner can never be flipped back.
- Avoid the squares next to empty corners. Playing there often hands the corner to your opponent.
- Fewer discs early can be better. Flipping lots of discs in the opening gives your opponent more choices.
- Keep your options open. Try to leave yourself plenty of legal moves while limiting the computer's.
- Build stable edges. Discs along an edge that grow out from a corner are safe.
Questions
Is Reversi the same as Othello?
They are almost the same game. Othello is a trademarked version of Reversi with a fixed starting position. This game uses that standard starting position and the same rules.
Can I play Reversi against the computer for free?
Yes. Reversi 3D is free with four computer levels, and there is nothing to download or sign up for.
What happens if I cannot move?
Your turn is passed automatically and the computer moves again. If neither player can move, the game ends.
Is my game saved?
Yes. An unfinished game is saved in your browser, so you can come back to it later.
More board games: Checkers 3D, Chess and Connect 4.