Minesweeper is Amutech's version of Gremlin Industries's Blockade released in 1977; the legitimacy of its release is unknown. Both 2-player and 4-player versions were made. The only immediately noticeable differences between these and the originals are the graphics, how to start the game (insert one coin for 2-player or two for 4-player if that option is available, then wait several seconds), and the starting positions of the players.