A Brief History of Minesweeper, From a 1973 Terminal to Your Browser

Most people assume minesweeper was invented by Microsoft. It was old before Windows, it was a 1970s teaching tool, and its journey from a campus computer network to your browser is the story of the puzzle genre compressed into four decades.

1973: Cube, on a network nobody had

The ancestor is generally agreed to be Cube, a game written by Curt Johnson in 1973 for the PLATO system, an early networked educational computer at the University of Illinois. It rendered squares of a cube to find safe paths, and it already carried the core idea: numbers reveal how many hazards sit in the neighboring cells, and you read the puzzle instead of the luck.

A decade later Ian Andrew shipped Mined-Out in 1983, which added the mine hunting and a surprisingly tense atmosphere for a grid game. These two are the grandparents of everything modern.

1989 to 1992: Windows makes it immortal

Robert Donner wrote an early Microsoft version in 1989, and in 1992 Microsoft shipped the game with Windows 3.1, bundled as an extra, included on installs alongside Solitaire. It was part of the family of games Microsoft used to teach users how the mouse worked: Solitaire taught drag, minesweeper taught click, right-click, and double-click, all in one board.

That bundle decision is the most important fact in this history. Windows 3.1 sold in the millions, and every copy came with minesweeper, which makes the little grid one of the most distributed games ever written. It has been in nearly every Windows release since, unchanged in spirit, unchanged in controls.

The competitive era

The game's quiet online scene has a real culture. Dedicated fans community-ranked boards by difficulty, and the performance metric 3BV was born there as a way to say one board is harder than another fairly. Expert records fell to 30 seconds and below as technique advanced, and the modern record books separate flag-heavy play from no-flag play because both deserve their own leaderboard.

The modern revival

The internet era brought the game to the browser, the mobile phone, and the offline web. A modern take adds what players always wanted that the classic never shipped: No Guess boards that are solvable by proof, practice tools that teach the logic, a fixed daily board that gives everyone the same field, and a timer-free zen mode for calm reads.

Today, the version in this browser works fully offline once loaded, installs like an app with a single prompt, and keeps your records and streaks locally on the device, with no account and no server in the middle. That is the quiet end of the story: a 1973 teaching tool that became the most shipped game in history, now living as an offline-first web app inside your pocket.

Where to go next

If the history lesson makes you want to play, the beginners guide is the classic first landing, and what 3BV means explains the scoring system those record books run on.