Reversi, also known as Othello, is a classic strategy board game played with black and white discs. This version gives you every way to play: against a friend on the same device, against the computer at different difficulty levels, or online against other players.
Choose a mode and a difficulty, then start the game. On your turn, place a disc so that one or more of your opponent's discs end up trapped in a straight line between your new disc and another of yours, across, down or diagonally. Every trapped disc flips to your colour. If you cannot make a move that traps at least one disc, you pass. When the board is full or nobody can move, the player with the most discs wins. Each player has a clock that runs during their turn, so you can see how long you have been thinking.