Which game replaced Reversi in Windows 3.1?

Minesweeper replaced Reversi in Windows 3.1. The change gave the operating system a new built-in puzzle game in which players uncover safe squares while avoiding hidden mines.

Minesweeper was officially introduced with Windows 3.1, released in 1992, and became one of the most recognizable pieces of Microsoft’s software history. Its number clues indicate how many mines touch a square, including diagonally, so solving a board combines deduction with occasional guessing. The game also served a practical purpose: its click-and-drag interaction helped users become comfortable with a mouse.

Reversi, the earlier Windows game, was an abstract board game based on surrounding and flipping an opponent’s pieces. It was not the same game as Solitaire, which remained in Windows 3.1, and it was unrelated to Hearts or FreeCell. Minesweeper’s replacement role is therefore easy to confuse with the broader collection of games Microsoft added or retained across different Windows releases.