Themed room

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The following information pertains to an upcoming version (NetHack 3.7.0). If this version is now released, please verify that it is still accurate, then update the page to incorporate this information.

Themed rooms are rare rooms that are unlike normal rectangular rooms. There is a 33 in 1033 chance (approximately 3.2%) that the game will attempt to place a themed room instead of a normal random room. Some themed rooms are simply unusual shapes, while others have contents unlike those that appear anywhere else. Some themed rooms can be further transformed into special rooms.

List of themed rooms

Name Can be special Normal room contents Map Notes
Normal random room Yes Yes A common rectangular room.
Fake Delphi Yes Yes A 11×9 room with a 3×3 room in its center, imitating Delphi.
Room in a room Yes Yes A random room with a random subroom
Huge room Yes Yes A very large room, with a 90% chance of containing a subroom.
Ice room No Yes The floor is replaced with ice.
Boulder room No No Each floor space in the room has a 30% chance of having a boulder or rolling boulder trap. These cannot appear before level difficulty 4.
Spider nest No No Each floor space in the room has a 30% chance of having a web. If the level difficulty is at least 9, about 80% of the webs will have a giant spider sitting on them.
Trap room No No Each floor space in the room has a 30% chance of having a trap. All of these traps will be of the same type, and they may have corpses and possessions on an eligible level. They can be arrow traps, dart traps, falling rock traps, bear traps, land mines, sleeping gas traps, rust traps or anti-magic fields.
Buried treasure Yes Yes There is a chest buried in the floor, containing 3d4 random objects.
Massacre No No There are 5d5 player monster or quest guardian corpses on the floor.
Pillars No No
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The pillars will be lava 17 of the time, water 17 of the time, or trees 17 of the time.
Statuary No No There are 5d5 statues and d3 statue traps.
Light source No No The room is always dark, containing a lit oil lamp.
Temple of the gods No No There is an altar of each alignment. The room is not an actual temple and does not contain a priest.
Mausoleum No No A square room with a 3×3 subroom in the center. There is a 50% chance that there will be a lich, demilich, mummy, vampire or zombie sealed and waiting for you in the center of the room; otherwise there will be a @ corpse. There is a 20% chance that the center will have a secret door; beware.
Random dungeon feature No Yes At the center of the room is a cloud, lava, ice, water, or a tree. The room will always have an odd width and height so that there is an exact center point.
L-shaped Yes Yes
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This room may appear rotated.
Blocked center Yes Yes
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A 9×9 room with the central 3×3 spaces filled with lava (70% chance), walls (15% chance) or water (15% chance).
Circular, small Yes Yes
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Circular, medium Yes Yes
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Circular, big Yes Yes
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T-shaped Yes Yes
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This room may appear rotated.
S-shaped Yes Yes
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This room may appear rotated or reflected.

Cross Yes Yes
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Four-leaf clover Yes Yes
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Water-surrounded vault No No The room is not connected to the other rooms, but may appear adjacent to a corridor. It can generate alongside an actual vault. It contains a giant zombie, ettin zombie, or vampire lord guarding four chests.
Twin businesses No No The room contains two 3×3 (interior space) shop subrooms, consisting of a weapon shop and an armor shop. Each has a 1% chance of being locked. These cannot appear before level difficulty 4, but can appear on a floor which also has a normal shop, as well as on rooms-and-corridors levels below Medusa's island.

See also