The Royal Jelly

Version 0.30: This article may not be up to date for the latest stable release of Crawl.

For a list of all jellies, see list of jellies. For the obsolete item, see royal jelly (item).

the Royal Jelly J
HP	152-308
HD	21
XP	14247
Speed	14
AC	8
EV	4
Will	180
Attack1	50 (hit: acid)
Attack2	30 (hit: acid)
Resistances	rPois+ rAcid+++ rDrown
Vulnerabilities	Silver
Habitat	Land
Intelligence	Brainless
Uses	Uses nothing
Holiness	Natural
Size	Large
Type	jelly, jelly
Flags	Destroys doors See invisible Unbreathing Unblindable Unique Acidic flesh Web immune

A particularly rich and golden gelatinous thing. Smaller jellies swim and pulse just below its surface, ready to burst forth at the slightest touch.

Useful Info

The Royal Jelly (or TRJ) is the jelly boss of the Slime Pits. Located in the center of Slime:5, it will not emerge until you've entered the stone structure it resides in, or if you make enough noise nearby to awaken it.

It has an impressive amount of HP, powerful acidic melee attacks, exceptional speed, and an unusual defense mechanism: whenever it's damaged, it spawns various powerful jelly-type monsters to attack you (azure jellies, quicksilver oozes, rockslimes, and acid blobs). Fortunately, it cannot pursue you up stairs, allowing you to abort attempts at killing it that you don't feel confident you can complete.

Killing the Royal Jelly causes two things to happen:

• The translucent walls of the four central vaults that the Royal Jelly guarded will come crumbling down, allowing you access to the slimy rune of Zot and the piles of treasure.
• Jiyva, the god of slimes, immediately ceases to exist once its biggest sentient worshiper dies. You can prevent this by worshiping Jiyva yourself before killing TRJ, but killing such a high-ranking jelly will result in penance. Note that you can't escape divine wrath by killing TRJ.

Strategy

Strategy to fight TRJ with melee/single-target spells.

Get TRJ in the corner (while hasted), throw a net, position yourself as shown, then create summons to prevent jellies from hitting you and to prevent TRJ from escaping.

The Royal Jelly is a formidable foe. Trying to run at it with an axe will likely lead to your death, even with rCorr, as you'll be quickly surrounded by 8 high-level jellies.

Many strategies exist to take on TRJ. No matter what you're doing, it is recommended to have corrosion resistance, clear the rest of the floor, and use all sorts of buffs (haste, might, brilliance...). These not only increase your chance of winning, but also help you if something goes terribly wrong.

• Corridor fighting. Fighting multiple monsters in a corridor is great, and TRJ isn't any different. The corridors in Slime:5's central vault aren't perfect hallways, but they can allow you to fight 3 slimes at a time (instead of 8).

By using summons (scroll of summoning, phantom mirror, spells...) in the corridor, you can prevent TRJ's reinforcements from attacking you, turning it into a simple 1v1 fight. A huge improvement. Summons can also prevent TRJ from retreating.

• Torment + Immolation. Slimes are natural monsters, so they are vulnerable to torment's half-HP effect. TRJ spits out other jellies, which are perfect targets for immolation's explosion effect. See TRJ at the edge of sight, torment once, use immolation, then find a way to ignite it (usually a strong ranged attack, preferably piercing). Some characters will want/need to use torment a second time.

The big risk of this strategy is that torment also reduces your HP by half (unless immune). A potion of lignification gives torment immunity, though it also melds armour and makes you stationary.

• Snakebombing. Summons and zombies are also affected by immolation. Use the same strategy, but create lots of summons (or Wretches, for Kiku followers) and immolate them. Inner Flame jellies and inner flame allies will fight, and one will die, causing the other to explode. A lot of summons (e.g. multiple scroll of summoning. Haunt) may be needed. Scroll of butterflies can work in theory but is unpredictable. Note that Death Channel's spectres cannot be immolated, due to their infinite willpower.

• Blasting it from range. A powerful piercing/AOE ranged attack can be strong enough to kill TRJ from full LOS range, whether on its own or when combined with immolation. Fire Storm and Chain Lightning will work as you'd expect, but other spells can be used too.
  • Ignition turns the fight into a cakewalk; since jellies always spawn near TRJ, the boss is hit by 9 Ignition explosions at a time. Immolation isn't required here.
  • Maxwell's Capacitive Coupling doesn't have AOE, but instantly kills every monster, TRJ included. Stand on an upstairs, use MCC when TRJ is as far as possible, then retreat upwards to escape the aftermath. Then enter Slime:5 from another staircase, luring the residue one by one.
  • Discord. Turns summoned slimes hostile to each other. Immolate and you win.
  • For melee characters, using javelins (+ immolation) at high skill can be used to the same effect. TRJ is vulnerable to silver, so silver javelins are especially effective. Throw until you create a couple slimes, use immolation, then throw to activate the fireworks.
  • Lower level spells, such as high-power Plasma Beam, can be used, too.

• Scroll of vulnerability. At 180 willpower, it's normally hard to use Hexes. Using vulnerability cuts that in half, making it reasonable for repeated hexes to get through. Be very careful; since vulnerability also cuts your will in half, golden eyes and great orb of eyes can inflict nasty statuses.
  • Standard high-tier stab hexes (paralysis, Petrify) work. Best used in a corridor, since slimes still spawn when TRJ is disabled.
  • Polymorph turns TRJ it something else. This creates a mass of jellies, but once you deal with them, no more will spawn.
  • Lugonu's Banish sends TRJ to the Abyss. Banish doesn't count as a kill, meaning the stone walls won't open. Lugonu worshippers have a way to open stone walls, however.

• Opening the chambers yourself. The chambers are guarded by stone walls, and there are a few ways to break them (Shatter, Fedhas' Overgrowth, Lugonu's Corruption). Shatter is extremely loud and will attract just about everything, though you can lure monsters away and take the loot for yourself.

• Jiyva. Of course, if you wish to avoid this entire mess, you can simply worship Jiyva and waltz in at 6* of piety. Most of the treasure will inevitably get eaten, but you'll at least be able to make off with the rune and whatever artefacts were present. As per usual with Jiyva, Apportation may come in handy.

Tips & Tricks

• TRJ is large, but not giant. This makes it vulnerable to throwing nets, allowing you to get free actions and stabs while the boss is immobile. Be aware that it will continue to spit out reinforcements.
• TRJ retreats behind its spawned jellies periodically. Piercing, AOE, or smite-targeted attacks can hit TRJ past its reinforcements. Otherwise, you'll need to fight through or reset the fight.
• TRJ will not follow you upstairs, but its generated slimes will. If you plan on running back upstairs mid-fight, expect some of its spawns to follow you.
• If you need to escape the floor without pursuing jellies following you up, Haste will also allow you to make a fairly safe escape; TRJ and any quicksilver oozes will keep up with you, but nothing else will. If you wish to actually outrun TRJ and the quicksilver oozes, you'll likely need both Haste and Swiftness.
• If you've accidentally created an army of jellies and need to abort, heal up and stair dance so you can clear out the reinforcements without dealing with too many of them at a time. Entering the floor from different staircases will let you avoid being immediately surrounded.
• Watch out when using distortion. Banish doesn't count as a kill, so if you banish TRJ without a way to break through stone walls, you'll need to go to the Abyss and kill it.

History

• In 0.31, new Slime:5 vaults will be added. None of them have the corridors of the original vault, which will make certain strategies moot.
• Prior to 0.27, death oozes were created, instead of quicksilver oozes and rockslimes.
• Prior to 0.23, exploding the Royal Jelly with Uskayaw's Grand Finale didn't generate any jellies.
• Prior to 0.19, the Royal Jelly could eat items and could heal itself when shot with anything other than stones.
• Prior to 0.16, the Royal Jelly did not immediately spit out a large number of jellies when polymorphed, making it a viable combat strategy.
• Prior to 0.15, hitting the Royal Jelly could generate brown oozes as well.
• Prior to 0.11, the Royal Jelly was not able to regenerate naturally. This made the fight much easier to complete over several small assaults.