Reversi, also known as Othello, is a game that is available on Microsoft Windows, such as Windows 1.0, and other versions. The regular version (with AI) existed up to Windows 3.0, while the Internet version is available since Windows Me up to Windows 7.
The object of the game is to have the majority of disks turned to display your color when the last playable empty square is filled.
There are the black discs and the white discs. Black goes first.
On Microsoft Windows, the board is a 8x8 checkerboard. There are 2 black discs and 2 whites discs diagonal to each other. That is the starting position.
When you play reverse, you need to put your disc adjacent to a white disc(s), where there is your color on the other side of the opponent's discs. When they place it, the other players disc turns to your color. This game needs much strategy.
The first version of Windows which contains Reversi is Windows 1.0. The version with an AI existed until Windows 3.0, which was replaced with Solitaire in newer versions. An Internet version exists with Windows ME, though it was not available in Windows Vista and it is last seen in Windows 7 before being replaced with metro apps in Windows 8.