View source for Castle

{{level|Castle|
 |branch=Dungeons of Doom
 |from=25|to=29
 |bones=no
 |teleport=no
 |mapping=yes
 |digfloor=no
 |digwalls=Only in maze parts
}}
The '''Castle''' is a special level just above the [[Valley of the Dead]]. It is the lowest level of the [[Dungeons of Doom]], and is located between DL 25 and 29. The level permits no [[bones]] files and is [[no-teleport level|no-teleport]]. It is considered a [[graveyard]] level (undead are unlikely to leave corpses). It is notable for having a lot of monsters, soldiers, loot and a guaranteed [[wand of wishing]].

==Map==

{{upcoming|3.7.0|The following map may be mirrored vertically and/or horizontally.}}

<div class="ttymap"><replacecharsblock rules="ttymap">
1=[[giant eel|{{monsym|giant eel}}]]
2=[[shark|{{monsym|shark}}]]
3=[[lieutenant|{{monsym|lieutenant}}]]
4=[[soldier|{{monsym|soldier}}]]
#=[[drawbridge|{{brown|#}}]]
^=[[trap door|{{brown|^}}]]
store={{yellow|store}}
~={{black|.}}
m={{black|m}}
b=[[yendorian army|{{white|@}}]]
D=[[dragon|{{white|D}}]]
t={{magenta|t}}
w=[[chest|{{brightgreen|(}}]]
(=[[chest|{{brown|(}}]]

-----------------------------------------------------------------------------
|mmmmm|}}}}}2}}}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}}}2}}}}}|mmmmm|
|mmmmm|}-------}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}-------}|mmmmm|
|mmmmm|}|.4w4.|-----------------------------------------------|.4w4.|}|mmmmm|
|mmmmm|}|.....+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+.....|}|mmmmm|
|mmmmm|}-------------------------------+-----------------------------}|mmmmm|
|mmmmm|}}}}}}|..4.4...|bbbbbbbbb.+t..t..t..t.|.......SDS.......|}}}}}}|mmmmm|
|mmmmm|.....}|.4...4..|bbbbbbbbb.|.t..t..t..t|.store.|D|.store.|}......mmmmm|
|mmmmm|.....1|........|----------|t..t..t..t.|--------S--------|1.....|mmmmm|
|mmmmm|.....}#..3{....+~~~~~~~~~~+.t..t..t.\(S~^~~~^~~~^~~~^~~^+......|mmmmm|
|mmmmm|.....1|........|----------|t..t..t..t.|--------S--------|1.....|mmmmm|
|mmmmm......}|.4...4..|bbbbbbbbb.|.t..t..t..t|.store.|D|.store.|}.....|mmmmm|
|mmmmm|}}}}}}|..4.4...|bbbbbbbbb.+t..t..t..t.|.......SDS.......|}}}}}}|mmmmm|
|mmmmm|}-------------------------------+-----------------------------}|mmmmm|
|mmmmm|}|.....+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~+.....|}|mmmmm|
|mmmmm|}|.4w4.|-----------------------------------------------|.4w4.|}|mmmmm|
|mmmmm|}-------}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}-------}|mmmmm|
|mmmmm|}}}}}2}}}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}}}2}}}}}|mmmmm|
-----------------------------------------------------------------------------
</replacecharsblock></div>
The stairs up are in a small maze on the left side of the level. The middle part of the level contains the castle, surrounded by a [[moat]]. In one of the four corner rooms on a spot marked [[chest|{{brightgreen|(}}]], there is a guaranteed untrapped [[chest]] containing a wand of wishing. The walls inside the castle are undiggable, but the walls of the mazes and the two vertical walls separating the mazes from the moats at the front and back of the castle are diggable. The only way down is through the [[Trap|trap doors]] in the castle (there is no downstair). The floor is undiggable, but if you fill the trap doors, you may dig [[hole]]s where they were.

Climbing the stairs up from the Valley of the Dead will place you in a random location in the right-hand maze on the Castle level.

The four rooms marked "store" are filled with [[food]], [[weapon]]s, [[armor]], and [[gems]], and may include useful [[magical item]]s or [[artifact|artifact weapons]].

The Castle moat contains four [[shark|sharks]] and four [[giant eel|giant eels]]. The two [[Special_room#Barracks|barrack]]s on either side of the entry hall contain their usual complement of inhabitants (chosen from [[Yendorian army|soldiers, lieutenants, sergeants, and captains]]); in addition, each corner tower contains two soldiers, and the atrium eight soldiers and a lieutenant. The throne room contains 27 monsters at the positions marked {{magenta|t}}, roughly equally chosen from {{mcsl|E}} {{mcsl|H}} {{mcsl|L}} {{mcsl|M}} {{mcsl|N}} {{mcsl|O}} {{mcsl|R}} {{mcsl|T}} {{mcsl|X}} {{mcsl|Z}}; a chest is behind the throne. The alcoves between the marked storerooms contain two random [[dragons]] each.

The chest with the wand of wishing is in one of the four spots marked [[chest|{{brightgreen|(}}]] each guarded by two soldiers. The black floors (marked ".") and the mazes (marked "m") are unlit.

===Drawbridge===
The {{brown|#}} at the front of the castle is the [[drawbridge]]. If you don't know the [[passtune]], one way to open it is to play a game of [[wikipedia:Mastermind (board game)|mastermind]] with it. The player must use a [[tonal instrument]] and be standing at most a knight's move from the drawbridge (standing any closer can be hazardous, if the drawbridge opens or closes on you or is destroyed). Applying the instrument without improvising, the player must guess the 5 note combination to open the drawbridge. The notes you can play are A, B, C, D, E, F, and G. Once you get the right combination, the drawbridge opens and you can cross the moat. You may close the drawbridge by playing the passtune again, to crush any monster that happens to be on it.

The drawbridge may also be opened with a [[wand of opening]], a [[spell of knock]], or the [[blessed]], charged [[Bell of Opening]].

Zapping the open drawbridge with a [[wand of striking]] or a [[spell of force bolt]] will smash it to pieces, also tearing apart any monster (or player) currently standing on or next to it.

== Strategy ==

* It may be useful to quaff a blessed [[potion of object detection]] (or cast the [[Skilled]] [[spellbook of detect treasure|spell of detect treasure]]) before entering the castle, as this will both reveal the location of the wand (allowing you to travel to it directly), and the contents of the store rooms (which frequently contain magical armor or artifact weapons and therefore might influence how you spend your wishes).
* There is a small probability that the [[xorn]]s will go and eat metal items from the storage rooms, so if you are worried about losing potentially valuable items you may want to kill the xorns quickly as you see them. You can also try to go directly to the storage rooms before they have a chance to eat anything.
* After you open or destroy the drawbridge, it may be better to retreat to the maze to fight rather than doing it right at the entrance – this way, you can stand in a spot where only one monster can reach you at once and monsters you aren't currently fighting can't use ranged attacks. This also reduces the time you spend fighting next to the moat and the chance of making a typo and falling into it, blanking valuable items.
* Once you've killed everything, it's often worth trying to [[polypiling|polypile]] some of the junk left behind. There is an awful lot of junk armor, and the chances of getting some nice magical items or a [[T-shirt]] are quite good.
* You can [[magic whistle|whistle]] [[pet]]s into the castle without entering yourself by floating over the [[moat]] between the corner towers and the edge of the map. (You may have to try many times for this to work; it helps if there are other monsters around you to limit the possible squares the pet can be summoned to.) [[Vampire lord]]s work well due to their natural [[regeneration]], provided you give them an [[elven cloak]] to [[magic cancellation|cancel]] the [[lich]]s' [[cold]] attack. It is still a good idea to monitor your pet's health. Occasionally strong pets such as [[dragon]]s may even be able to [[apport|pick up and fetch]] the chest.
* Using a non-cursed [[scroll of earth]] in the courtyard in which you enter will generate [[boulders]] that can be used to fill in moat spaces, blocking the movement of moat-dwelling monsters; if you track where those monsters are, e.g. via using [[telepathy]] or [[warning]], and use this to lock all the sea creatures out from a section of moat, you can use this to create a zone where you are safe from being attacked from the water. This will also enable the xorns to leave the Castle before you open the drawbridge, allowing you to fight them separately from the other Castle denizens. Enough boulders will be left over to allow you to cross the moat yourself, if the drawbridge is (accidentally or intentionally) destroyed, whilst allowing you to plug enough of the trapdoors to reach the dragons and store rooms, and thus a single scroll of earth can solve multiple problems at once.

===Getting into the Castle===
There are many ways to get into the castle. These include:
* Open the drawbridge by playing the [[passtune]], zapping it with a [[wand of opening]], or applying the blessed [[Bell of Opening]]. Be sure to stand back a couple of squares for the wand or a knights-move away otherwise, to avoid having the bridge hit you in the face and kill you. If you have a tonal instrument, you can repeatedly play the passtune to crush monsters under the drawbridge. Do not cross until you're sure no monsters with wands of striking might zap them at you.
* Zap the drawbridge with a [[wand of striking]] or a [[Spellbook of force bolt|spell of force bolt]]. This will leave an empty square of moat, which can be crossed by reading a [[scroll of earth]] and pushing a boulder in, [[Levitation|levitating]] across, [[jumping]], throwing a [[punishment|heavy iron ball (chained to you)]], or zapping a [[wand of cold]] to freeze the water (be sure no fire-breathing monsters or wands of fire are aimed at you before crossing). If you are truly desperate, you can wait until the square where the drawbridge used to be is empty, then repeatedly dive into the water. Eventually, you will climb out on the opposite side. (Naturally, drop anything you don't want wet first.) Also, make sure you are not standing directly in front of the drawbridge (over the moat)--if you are, you will be hit by flying metal and insta-killed. Any further back is safe.
* [[Levitate]] or [[Water walking|water walk]] around to the back of the castle, or freeze the water around the castle with a wand of cold or the [[Spellbook of cone of cold|cone of cold spell]]. (Look out for [[sea monster]]s.) You can also [[level teleport]] into the Valley of the Dead (you can specify level 99, or one level below the castle), and climb the stairs up to the castle. In either case, you will need to get through the back trapdoors in the back to get into the castle; you can levitate or jump across, or you can use the boulders from a scroll of earth to fill them in; note, however, that if you do this you will need to dig through the filled trap doors to enter Gehennom.
* Polymorph yourself into a [[phasing]] monster ([[xorn]] or [[earth elemental]]), and walk through the wall of the castle. This has the advantage of taking you directly to the wand, if you know where it is, and allowing you to skip the monsters. (Both xorns and earth elementals can also breathe underwater, so you can walk through the moat safely, although anything not inside a greased or oilskin bag will still get wet.)

===Dealing with the drawbridge===

The drawbridge has been a source of many deaths. Here are a few things you can do to avoid [[YASD]]:
* Do not zap the drawbridge with a wand of striking while standing directly in front of it.
* Do not open it while standing on either of the two spaces directly in front of it.
* Do not linger near it when other monsters have wands of striking.

Beware crushing [[peaceful]]s in the drawbridge. The resulting bad [[Luck]] can make your [[wish]]es fail or come out cursed.

==Tools==
Lazy players may find the automated Mastermind solver at http://nethack.gridbug.de/mm.html useful.

== History ==
The original Castle appears in [[NetHack 3.0.0]]. The [[wand of wishing]] appears in one of the corner turrets, as in the current version; but it lies exposed on the floor instead of being protected by a [[chest]] and [[Elbereth]]. Furthermore, the Castle has empty rooms where the barracks are now. The next level is the beginning of [[Hell]], and so the [[trap door]]s can lead to [[instadeath]].

[[NetHack 3.1.0]] adds the [[barracks]] and engraves [[Elbereth]] under the [[wand of wishing]]. [[Gehennom]] replaces [[Hell]] and so an adventurer without [[fire resistance]] no longer risks [[instadeath]], though rashly dropping through the [[trap door]]s is still not a good idea.

[[NetHack 3.2.0]] places the [[wand of wishing]] in a [[chest]] for the first time.

[[NetHack 3.6.0]] introduces a few minor changes: filled trapdoors can be re-dug, opening or closing the castle drawbridge by playing the passtune consumes a turn, and the chest containing the wand of wishing can never be trapped.
==Variants==
{{todo|Add FIQhack versions}}
===dNetHack===
{{main|Castle (dNetHack)}}
[[dNetHack]] adds some versions of the castle, most of which are similar to the vanilla castle.

===UnNetHack===
{{main|Castle (UnNetHack)}}
[[UnNetHack]] adds two new versions of the castle with different challenges and rewards.

===SLASH'EM===
The water in SLASH'EM castle moat is different from any other water ("sparkling water"); although SLASH'EM does not fully implement the [[Lethe]] patch, it mimics the "waters of Lethe" concept from that patch. The castle water is far more dangerous, as falling into it causes every magical item in your inventory to be dipped in it, and its dipping effects are far nastier than normal water:
*All items have their [[BUC]] status set to uncursed.
*All items are subject to [[rust]], if applicable.  The waters do not affect the [[erosion]]-proofing of items, and so will not rust them.
*[[Scrolls]] and [[spellbook]]s are blanked.
*[[Potions]] are turned into uncursed [[water]] in one dip.
*Potions of water are turned into uncursed [[potion of amnesia|potions of amnesia]] (but can be turned back to water if dipped again).
*Enchantable items ([[ring]]s, [[weapon]]s, [[armor]]) lose one positive enchantment.
*Wands lose one charge.
*Magical [[tool]]s and [[gem]]s are converted into mundane counterparts, if possible: [[luckstone]]s become [[flint]], [[magic lamp]]s become [[oil lamp]]s, etc. [[Magic marker]]s will not be changed, but will lose 8 charges. [[Crystal ball]]s are unaffected.

In addition, anyone falling into it will suffer [[amnesia]].

Walking on the water via [[water walking boots]] (but not swimming via [[gauntlets of swimming]] or polyself) has no ill effects on the boots or you, and obviously [[flying]] or [[levitation]] over the water is safe. One of these three is very advisable in SLASH'EM's castle. Destroying the drawbridge/door, jumping in the water, and hoping you land inside the castle is no longer a viable strategy (although opening the drawbridge still is). Although the water is dangerous, controlled dipping of items into it via [[flying]] or [[water walking]] provides an unlimited way to remove cursed gear, so long as you don't mind the item losing a point of enchantment and possibly rusting. Non-chargeable rings and amulets will be unaffected.

==External links==

* [https://github.com/UnNetHack/UnNetHack/blob/master/dat/castle.des UnNetHack GitHub level files]

{{DOD}}
{{nethack-366}}
[[Category:Special levels]]