Identify which tiles have mines by the numbers displayed in neighboring tiles. Special features: Zooming and scrolling(both discrete and smooth) so boards are only limited in size by your computer's memory and not by your screen's resolution. Multi-mine tiles. Up to seven mines can be on one tile. Hold down 'flag' to add flags until the numbers match. Toroidal boards that wrap left to right and top to bottom. Endless survival mode. Quickly clear the board as it descends. You take damage if the lowest row has unopened non-mine tiles when it falls off the board. Hot keys for quickly opening all 4 corners.