Editing NetHack (section)

===Dungeon levels===
''NetHack'''s dungeon spans about fifty primary levels, most of which are [[procedural generation|procedurally generated]] when the player character enters them for the first time. A typical level contains a way "up" and "down" to other levels. These may be stairways, ladders, trapdoors, etc. Levels also contain several "rooms" joined by corridors. These rooms are randomly generated rectangles (as opposed to the linear corridors) and may contain features such as altars, shops, fountains, traps, thrones, pools of water, and sinks based on the randomly generated features of the room. Some specific levels follow one of many fixed designs or contain fixed elements. Later versions of the game added special branches of dungeon levels. These are optional routes that may feature more challenging monsters but can reward more desirable treasure to complete the main dungeon. Levels, once generated, persist throughout a single game, in contrast to the non-persistent levels in ''[[Moria (1983 video game)|Moria]]''-style games.<ref name="arstech roguelikes">{{cite web | url = https://arstechnica.com/gaming/2020/03/ascii-art-permadeath-the-history-of-roguelike-games/ | title= ASCII art + permadeath: The history of roguelike games | first= Richard C. | last = Moss |date = March 19, 2020 | access-date = June 26, 2020 | work = [[Ars Technica]]}}</ref>