Minefall: Minesweeper Puzzle

Minesweeper was never this deep. Minefall is a logic roguelike where every level is an older age of the Earth. Dig from a 1984 arcade room down through plague pits, pyramid chambers and dinosaur beds, all the way to the Big Bang. FIFTY LEVELS, FIFTY AGES ◆ 50 pixel-art levels, each an older layer of time: telephone exchange, war bunker, Victorian sewer, Roman villa, Babylon vault, mammoth steppe, Jurassic marsh, magma ocean, first stars. ◆ Boards grow as you go deeper, from 6x8 to 10x13, and the mines get denser with every level. ◆ Find the portal hidden in the ground and drop to the next age. Dig cleanly and the gold flows. MINESWEEPER RULES, ROGUELIKE STAKES ◆ Numbers tell you how many mines touch a tile. Tap to dig, hold to flag. That part you know. ◆ A mine costs one of three hearts, not the run. Lose all three and the dig is over; you start again from 1984. ◆ Every board is built…