Brimstone key

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Brimstone key 3 detail.png

The brimstone key is a key obtained from killing monsters while on a Slayer task given by Konar quo Maten. It is used to open the brimstone chest. The average value of a drop from the brimstone chest is 92,674.13. Upon death in the Wilderness, a brimstone key converts to two coins for the killer.

The probability of receiving a key as a drop increases with the slain monster's Combat level. For monsters with combat level 100 or higher, the probability is between and , scaling linearly and capping at level 350. Specifically, the probability for a monster with combat level is[1]


For monsters with combat level smaller than level 100, the probability follows the curve[2]


Additionally, if the monster has a Slayer level requirement, there is a 20% boost in the drop probability.[3]

Item sources[edit | edit source]

For an exhaustive list of all known sources for this item, see here (include RDT).
SourceLevelQuantityRarityTrailblazer regions
Aberrant spectre96 Multicombat.png11/82MorytaniaKandarin
Abhorrent spectre253 Multicombat.png11/55MorytaniaKandarin
Abyssal Sire350 Multicombat.png11/40Misthalin
Abyssal demon124 Multicombat.png11/76MisthalinMorytania
Adamant dragon338 Multicombat.png11/52Fremennik
Ahrim the Blighted98 Multicombat.png11/100
Alchemical Hydra426 Multicombat.png11/40
Ancient Wyvern210 Multicombat.png11/62Misthalin
Ancient Zygomite109 Multicombat.png11/78Misthalin
Ankou (m)75–98 Multicombat.png11/225WildernessMisthalinKandarin
Aviansie69–148 Multicombat.png11/292AsgarniaWilderness
Baby black dragon83 Multicombat.png11/157MisthalinKandarinAsgarnia
Baby blue dragon48 Multicombat.png11/640AsgarniaKandarin
Baby red dragon48 Multicombat.png11/640KaramjaKandarin
Basilisk Knight204 Multicombat.png11/63Fremennik
Basilisk Sentinel358 Multicombat.png11/40Fremennik
Basilisk61 Multicombat.png11/323Fremennik
Berry71 Multicombat.png11/268Asgarnia
Black demon Level 178172; 178; 184 Multicombat.png11/85KaramjaWildernessAsgarnia
Black demon Level 172172; 178; 184 Multicombat.png11/85KaramjaWildernessAsgarnia
Black demon Level 184172; 178; 184 Multicombat.png11/85KaramjaWildernessAsgarnia
Black dragon Level 227227 Multicombat.png11/74AsgarniaWildernessKandarinMisthalinTirannwn
Bloodveld76; 81 Multicombat.png11/172AsgarniaMorytaniaKandarinWilderness
Blue dragon111 Multicombat.png11/97AsgarniaKandarin
Brine rat70 Multicombat.png11/224Fremennik
Bronze dragon131; 143 Multicombat.png11/93Karamja
Brutal black dragon318 Multicombat.png11/56
Brutal blue dragon271 Multicombat.png11/65
Brutal red dragon289 Multicombat.png11/62
Callisto470 Multicombat.png11/50Wilderness
Cave kraken127 Multicombat.png11/75Kandarin
Cerberus318 Multicombat.png11/56Asgarnia
Chaos Elemental305 Multicombat.png11/59Wilderness
Chaos Fanatic202 Multicombat.png11/79Wilderness
Choke devil264 Multicombat.png11/53Desert
Colossal Hydra309 Multicombat.png11/46
Commander Zilyana596 Multicombat.png11/50Asgarnia
Crazy archaeologist204 Multicombat.png11/79Wilderness
Dagannoth (Waterbirth Island) Level 9090 Multicombat.png11/120Fremennik
Dagannoth (Waterbirth Island) Level 8888 Multicombat.png11/128Fremennik
Dagannoth Prime303 Multicombat.png11/59Fremennik
Dagannoth Rex303 Multicombat.png11/59Fremennik
Dagannoth Supreme303 Multicombat.png11/59Fremennik
Dagannoth fledgeling70 Multicombat.png11/280Fremennik
Dagannoth spawn42 Multicombat.png11/772Fremennik
Dagannoth74; 92 Multicombat.png11/235Fremennik
Dark beast182 Multicombat.png11/66Tirannwn
Deviant spectre169 Multicombat.png11/68
Dharok the Wretched115 Multicombat.png11/97
Drake192 Multicombat.png11/64
Dust devil93; 110 Multicombat.png11/87Desert
Fire giant86; 104; 109 Multicombat.png11/139KaramjaKandarinWildernessDesert
Flight Kilisa159 Multicombat.png11/88Asgarnia
Flockleader Geerin149 Multicombat.png11/90Asgarnia
Gargoyle111 Multicombat.png11/77Morytania
General Graardor624 Multicombat.png11/50Asgarnia
Giant Mole230 Multicombat.png11/74Asgarnia
Greater Nechryael200 Multicombat.png11/64Tirannwn
Greater abyssal demon342 Multicombat.png11/40MisthalinMorytania
Greater demon (m)92–113 Multicombat.png11/112WildernessKaramjaMorytaniaAsgarniaKandarin
Grotesque Guardians Multicombat.png11/43Morytania
Guardian Drake386 Multicombat.png11/40
Guthan the Infested115 Multicombat.png11/97
Hellhound122; 127; 136 Multicombat.png11/95WildernessKandarinAsgarnia
Hellhound122; 127; 136 Multicombat.png11/95WildernessKandarinAsgarnia
Hydra194 Multicombat.png11/64
Insatiable Bloodveld202 Multicombat.png11/63MorytaniaKandarinWilderness
Insatiable mutated Bloodveld278 Multicombat.png11/51TirannwnMorytania
Iron dragon189; 215 Multicombat.png11/82Karamja
Jelly78 Multicombat.png11/156Fremennik
K'ril Tsutsaroth650 Multicombat.png11/50Asgarnia
Kalphite Guardian141 Multicombat.png11/91Desert
Kalphite Queen333 Multicombat.png11/53Desert
Kalphite Soldier85 Multicombat.png11/145Desert
Kalphite Worker28 Multicombat.png11/1,136Desert
Karil the Tainted98 Multicombat.png11/100
King Black Dragon276 Multicombat.png11/64Wilderness
King kurask295 Multicombat.png11/48FremennikTirannwn
Kraka91 Multicombat.png11/116Asgarnia
Kraken291 Multicombat.png11/48Kandarin
Kree'arra580 Multicombat.png11/50Asgarnia
Kurask106 Multicombat.png11/78FremennikTirannwn
Lizardman brute73 Multicombat.png11/245
Lizardman shaman150 Multicombat.png11/90
Lizardman53; 62 Multicombat.png11/541
Lizardman53; 62 Multicombat.png11/388
Long-tailed Wyvern152 Multicombat.png11/71Misthalin
Marble gargoyle349 Multicombat.png11/40Morytania
Mithril dragon304 Multicombat.png11/59Kandarin
Monstrous basilisk135 Multicombat.png11/74Fremennik
Mountain troll69; 71 Multicombat.png11/292AsgarniaFremennik
Mutated Bloodveld123 Multicombat.png11/76TirannwnMorytania
Nechryael115 Multicombat.png11/77Morytania
Nechryarch Normal Multicombat.png11/48Morytania
Night beast374 Multicombat.png11/40Tirannwn
Nuclear smoke devil280 Multicombat.png11/51Kandarin
Pee Hat91 Multicombat.png11/116Asgarnia
Red dragon152 Multicombat.png11/89KaramjaKandarin
Repugnant spectre335 Multicombat.png11/42
Rock (Troll)111 Multicombat.png11/97Asgarnia
Rune dragon380 Multicombat.png11/50Fremennik
Sarachnis318 Multicombat.png11/56
Scorpia225 Multicombat.png11/75Wilderness
Screaming twisted banshee144 Multicombat.png11/72
Shadow Wyrm267 Multicombat.png11/52
Skeletal Wyvern140 Multicombat.png11/73Asgarnia
Skotizo321 Multicombat.png11/55
Smoke devil160 Multicombat.png11/70Kandarin
Spiked Turoth244 Multicombat.png11/56Fremennik
Spitting Wyvern139 Multicombat.png11/73Misthalin
Steel dragon246; 274 Multicombat.png11/70Karamja
Stick104 Multicombat.png11/99Asgarnia
Taloned Wyvern147 Multicombat.png11/72Misthalin
Thermonuclear smoke devil301 Multicombat.png11/47Kandarin
Thrower Troll67 Multicombat.png11/317Asgarnia
Torag the Corrupted115 Multicombat.png11/97
Troll general113 Multicombat.png11/97Asgarnia
Turoth83; 85; 87; 89 Multicombat.png11/125Fremennik
Twig71 Multicombat.png11/268Asgarnia
Twisted Banshee89 Multicombat.png11/99
Venenatis464 Multicombat.png11/50Wilderness
Verac the Defiled115 Multicombat.png11/97
Vet'ion454 Multicombat.png11/50Wilderness
Vitreous Jelly206 Multicombat.png11/62Fremennik
Vitreous warped Jelly241 Multicombat.png11/56
Vorkath392; 732 Multicombat.png11/50Fremennik
Vyrewatch Sentinel151 Multicombat.png11/89Morytania
Vyrewatch87–125 Multicombat.png11/133Morytania
Warped Jelly112 Multicombat.png11/77
Waterfiend115 Multicombat.png11/97KandarinTirannwn
Wingman Skree143 Multicombat.png11/91Asgarnia
Wyrm99 Multicombat.png11/80
Zulrah725 Multicombat.png11/50Tirannwn
Zygomite74; 86 Multicombat.png11/188Misthalin
Zygomite74; 86 Multicombat.png11/111Misthalin

Gallery[edit | edit source]

Changes[edit | edit source]

Date Changes
28 May 2020

A bug causing the Brimstone key drop rate to be lower than intended for monsters with a combat level of 100 or higher was fixed.[4]

Trivia[edit | edit source]

  • The symbol on the key is that of Yin and yang ("阴阳"/"陰陽"), which, in Chinese philosophy, are the two "primal" elements which create, shape, and influence everything in existence and have to be kept in balance. This references the philosophy of the Kahlith and their masters, the Tasakaal, which is to maintain the balance between life and death.

References[edit | edit source]

  1. Jagex. Mod Kieren's Twitter account. 16 January 2019. (Archived from the original on 26 May 2020.) Mod Kieren: "It follows a curve up until level 100 then scales linearly between those 2 values upto level 350 combat. Creatures over thsi[sic] will cap at 1/50. [1]"
  2. Jagex. Mod Kieren's Twitter account. 16 January 2019. (Archived from the original on 29 April 2020.) Mod Kieren: "0.2*(CBLEVEL - 100)^2 + 100"
  3. Jagex. Mod Ash's Twitter account. 8 June 2020. (Archived from the original on 11 June 2020.)
  4. Jagex. Mod Ash's Twitter account. 6 June 2020. (Archived from the original on 8 June 2020.) Mod Ash: "Actually Mod Maylea & I had this fixed in the update before last - sorry it didn't make the newspost at the time."