Minefield was written in 1984 for the Oric / Atmos 1 by Anthony Timson.

In this game, invisible mines are put around the screen. You (*) have to get from the bottom of the screen to the top of the screen, but if you hit a mine, you lose a life. After every full screen that you complete, the number of mines is increased. To help you on your travels, an indicator shows you how many mines there are in your vicinity. If you see a flag (_), you can collect it and get an extra 100 points. If you hit the surrounding wall (#) you die because it is also mined. After time that you lost a life you will see an action replay.

The following attributes can be used to map the evolution of Minesweeper. Blue cells are confirmed attributes for official versions of Minefield. Yellow cells are unknown.