# Themed room

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 a type of rare room that appear in NetHack, based on the 'random vaults' of UnNetHack. 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.
There is a 33⁄1033 chance (approximately 3.2%) that the game will attempt to place a themed room instead of a normal random room. 

Contents

1 List of themed rooms
2 Variants

2.1 xNetHack

3 References

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. 25% of the time, the ice melts under 2000 turns after the level is generated.

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.  A burned engraving pointing to the treasure ("Dig X east/west Y north/south") is also placed on a random floor space on the level.[1]

Massacre

No

No

There are 5d5 player monster or quest guardian corpses on the floor.

Pillars

No

No

------------|..........||..........||..--..--..||..--..--..||..........||..........||..--..--..||..--..--..||..........||..........|------------

The pillars will be lava 1⁄7 of the time, water 1⁄7 of the time, or trees 1⁄7 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.

Ghost of an Adventurer

No

No

One space in the room contains a ghost atop a fake bones pile consisting of the following, all of which are either cursed or uncursed:
65% chance of a dagger
55% chance of a random weapon
45% chance of a bow and arrow
65% chance of a random piece of armor
20% chance of a random ring
20% chance of a random scroll

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

-----&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;|...----|......||......||......|--------

This room may appear rotated.

Blocked center

Yes

Yes

-----------|.........||.........||.........||...}}}...||...}}}...||...}}}...||.........||.........||.........|-----------

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

&nbsp;&nbsp;---&nbsp;&nbsp;&nbsp;--.--&nbsp;--...--|.....|--...--&nbsp;--.--&nbsp;&nbsp;&nbsp;---&nbsp;&nbsp;

Circular, medium

Yes

Yes

&nbsp;&nbsp;-----&nbsp;&nbsp;&nbsp;--...--&nbsp;--.....--|.......||.......||.......|--.....--&nbsp;--...--&nbsp;&nbsp;&nbsp;-----&nbsp;&nbsp;

Circular, big

Yes

Yes

&nbsp;&nbsp;&nbsp;-----&nbsp;&nbsp;&nbsp;&nbsp;---...---&nbsp;&nbsp;-.......-&nbsp;--.......--|.........||.........||.........|--.......--&nbsp;-.......-&nbsp;&nbsp;---...---&nbsp;&nbsp;&nbsp;&nbsp;-----&nbsp;&nbsp;&nbsp;

T-shaped

Yes

Yes

&nbsp;&nbsp;&nbsp;-----&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;----...----|.........||.........||.........|-----------

This room may appear rotated.

S-shaped

Yes

Yes

&nbsp;&nbsp;&nbsp;--------&nbsp;&nbsp;&nbsp;|......|&nbsp;&nbsp;&nbsp;|......|----......||......----|......||......|--------

This room may appear rotated or reflected.

Cross

Yes

Yes

&nbsp;&nbsp;&nbsp;-----&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;----...----|.........||.........||.........|----...----&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|...|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;-----&nbsp;&nbsp;&nbsp;

Four-leaf clover

Yes

Yes

-----&nbsp;-----|...|&nbsp;|...||...---...||.........|---.....---&nbsp;&nbsp;|.....|&nbsp;&nbsp;---.....---|.........||...---...||...|&nbsp;|...|-----&nbsp;-----

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.

Variants
xNetHack
xNetHack uses a similar lineup of themed rooms to the one listed above, along with some rooms adapted from UnNetHack and new rooms that are original to the variant.

References

↑ commit bb3dc379