The Fall of Gondolin — SoD

This extra large underground map, a 144 by 144 grid, puts the player in the role of a dark lord's commander sent to find a hidden elven kingdom founded 350 years earlier, whose location the enemy does not know. Two players take part, but only one can be human. The computer-run Green side uses Rampart, Orange uses Stronghold, and there are no teams. Terrain is mostly rock and grass, with sand, some subterranean ground, and very little water. Six towns, ten starting heroes, 25 mines, 13 seer huts, and 14 monoliths and portals fill the land, including the Boots of Polarity and Titan's Gladius. Victory requires defeating all enemies, and the game is lost if the 280-day limit expires. Difficulty is Impossible.