NetHack is a single player dungeon exploration game that runs on a wide variety of computer systems, with a variety of graphical and text interfaces all using the same game engine. Unlike many other Dungeons & Dragons-inspired games, the emphasis in NetHack is on discovering the detail of the dungeon and not simply killing everything in sight - in fact, killing everything in sight is a good way to die quickly. Each game presents a different landscape - the random number generator provides an essentially unlimited number of variations of the dungeon and its denizens to be discovered by the player in one of a number of characters: you can pick your race, your role, and your gender.
Nethack will require Radeon Xpress 1200 Series graphics card with a Celeron 1GHz or Duron 2.0GHz processor to reach the recommended specs, achieving high graphics setting on 1080p. For your PC to completely meet the recommended requirements you will also need 256 MB system memory. Your graphics card will need to be capable of running DirectX 9.