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A monster's difficulty (also known as its MONSTR) is a number from 1 to 57 which represents the game's idea of how tough a monster is. It is based on the monster's level, then adjusted for any special properties the monster has which might make it extra-difficult. The raw values can be seen in monstr.c.

A monster is eligible for random generation when the average of your experience level and your dungeon level is equal to its Difficulty; they will be considered too weak for generation when your dungeon level is 7*Difficulty or greater. (For this purpose, once you have the Amulet of Yendor your dungeon level is considered to be that of the Sanctum, and in the endgame to be the depth of the Sanctum plus half your experience level.) The level of your god's appreciation of a sacrificed corpse is also dependent on the corpse's Difficulty (and not on the late monster's experience level).

Most of the less common mechanisms of monster generation do not have similar limits.

Monsters[]

This is a list of monsters sorted by difficulty, then by experience value.

This table was generated with the use of a modified version of makedefs to calculate experience values as well, and are believed by the author to be accurate. If there are discrepancies between these and those listed in the articles, please correct the article.

Name Difficulty Experience
Demogorgon 57 3273
Asmodeus 53 3203
Baalzebub 45 2315
Dispater 40 1911
Geryon 36 1611
Orcus 36 1425
Pestilence 34 1413
Famine 34 1413
Death 34 1413
Wizard of Yendor 34 1387
Master Kaen 31 1067
Yeenoghu 31 1055
high priest 30 1054
Grand Master 30 1052
Arch Priest 30 876
arch-lich 29 895
Juiblex 26 877
Archon 26 710
mail daemon 26 1
Medusa 25 635
Master of Thieves 24 587
Cyclops 23 661
Neferet the Green 23 592
Norn 23 587
Lord Sato 23 587
King Arthur 23 587
Chromatic Dragon 23 585
Nalzok 23 573
Minion of Huhetotl 23 573
kraken 22 1574
Croesus 22 745
mastodon 22 611
Shaman Karnov 22 582
Pelias 22 582
Orion 22 582
Lord Carnarvon 22 582
Hippocrates 22 582
Twoflower 22 581
Thoth Amon 22 546
iron golem 22 545
Ixoth 22 535
ki-rin 21 534
master lich 21 478
balrog 20 563
titan 20 539
yellow dragon 20 525
white dragon 20 525
silver dragon 20 525
red dragon 20 525
orange dragon 20 525
green dragon 20 525
gray dragon 20 525
blue dragon 20 525
black dragon 20 525
Master Assassin 20 502
Dark One 20 497
storm giant 19 536
Lord Surtur 19 487
Ashikaga Takauji 19 487
Angel 19 469
master mind flayer 19 415
Vlad the Impaler 18 479
jabberwock 18 477
glass golem 18 409
demilich 18 364
minotaur 17 504
Scorpius 17 474
purple worm 17 474
Nazgul 17 375
pit fiend 16 408
Olog-hai 16 309
guardian naga 16 294
stone golem 15 345
nalfeshnee 15 331
baluchitherium 15 331
sandestin 15 308
aligned priest 15 294
shopkeeper 15 286
vampire lord 14 398
skeleton 14 359
shade 14 357
ice devil 14 335
hell hound 14 291
guard 14 284
captain 14 277
disenchanter 14 273
prisoner 14 272
trapper 14 270
lich 14 268
frost giant 13 296
ettin 13 291
Oracle 13 285
bone devil 13 275
baby yellow dragon 13 273
baby white dragon 13 273
baby silver dragon 13 273
baby red dragon 13 273
baby orange dragon 13 273
baby green dragon 13 273
baby gray dragon 13 273
baby blue dragon 13 273
baby black dragon 13 273
titanothere 13 267
mind flayer 13 263
water troll 13 246
nurse 13 244
golden naga 13 240
vampire 12 327
Aleax 12 297
hezrou 12 255
clay golem 12 249
watch captain 12 221
valkyrie 12 221
tourist 12 221
samurai 12 221
rogue 12 221
lieutenant 12 221
knight 12 221
black pudding 12 221
barbarian 12 221
archeologist 12 221
ghost 12 220
wizard 12 216
ranger 12 216
priestess 12 216
priest 12 216
healer 12 216
elf 12 216
cavewoman 12 216
caveman 12 216
lurker above 12 214
queen bee 12 209
ice troll 12 206
rock troll 12 197
umber hulk 12 195
salamander 12 149
fire giant 11 254
monk 11 211
Elvenking 11 196
winged gargoyle 11 195
ogre king 11 194
doppelganger 11 191
zruty 11 186
giant mimic 11 186
water demon 11 180
couatl 11 180
vrock 11 175
marilith 11 157
xorn 11 127
elf-lord 11 123
electric eel 10 1115
flesh golem 10 186
barbed devil 10 178
hill giant 10 174
erinys 10 159
fire vortex 10 143
fire elemental 10 135
black naga 10 133
water elemental 10 127
earth elemental 10 127
air elemental 10 127
sergeant 10 118
giant mummy 10 116
cobra 10 91
long worm 9 169
horned devil 9 129
wumpus 9 119
steam vortex 9 113
stalker 9 113
large mimic 9 113
giant zombie 9 113
baby purple worm 9 113
baby long worm 9 113
shark 9 105
glass piercer 9 105
xan 9 104
winter wolf 9 102
hell hound pup 9 102
energy vortex 9 102
warhorse 9 97
troll 9 97
ogre lord 9 97
sasquatch 9 95
pit viper 9 94
quantum mechanic 9 92
mountain centaur 9 89
green slime 8 164
cockatrice 8 149
stone giant 8 126
giant 8 126
succubus 8 121
incubus 8 121
wraith 8 120
djinni 8 97
wood golem 8 92
warg 8 92
small mimic 8 92
ettin mummy 8 92
shocking sphere 8 91
freezing sphere 8 91
flaming sphere 8 91
ochre jelly 8 88
dwarf king 8 83
red naga 8 82
python 8 82
pyrolisk 8 82
gargoyle 8 79
watchman 8 78
soldier 8 78
Grey-elf 8 78
leocrotta 8 76
gelatinous cube 8 76
carnivorous ape 8 76
tiger 8 73
rust monster 8 71
guide 8 71
apprentice 8 71
acolyte 8 71
scorpion 8 67
abbot 8 66
forest centaur 8 64
gremlin 8 62
giant eel 7 1065
chickatrice 7 136
owlbear 7 94
barrow wight 7 90
tengu 7 76
large dog 7 76
large cat 7 76
ice vortex 7 75
leather golem 7 73
human mummy 7 73
ettin zombie 7 73
elf mummy 7 73
crocodile 7 73
chameleon 7 73
black light 7 73
mumak 7 67
warrior 7 66
vampire bat 7 66
thug 7 66
roshi 7 66
page 7 66
orc-captain 7 66
ninja 7 66
winter wolf cub 7 64
giant spider 7 64
student 7 61
ogre 7 61
neanderthal 7 61
hunter 7 61
horse 7 61
Green-elf 7 61
chieftain 7 61
attendant 7 61
yeti 7 59
panther 7 59
lynx 7 59
werewolf 7 56
water moccasin 7 48
quasit 7 37
iron piercer 6 62
werewolf 6 61
spotted jelly 6 61
gnome king 6 61
quivering blob 6 59
wolf 6 56
piranha 6 56
orc mummy 6 56
lizard 6 56
gold golem 6 56
giant beetle 6 56
dwarf mummy 6 56
brown pudding 6 56
dust vortex 6 55
white unicorn 6 52
gray unicorn 6 52
black unicorn 6 52
dwarf lord 6 51
plains centaur 6 49
snake 6 48
Woodland-elf 6 46
raven 6 46
Kop Kaptain 6 46
rope golem 6 44
jaguar 6 44
ape 6 41
soldier ant 6 37
fire ant 6 34
blue jelly 5 45
housecat 5 44
dog 5 44
dingo 5 44
yellow light 5 43
human zombie 5 41
gnome mummy 5 41
orc shaman 5 38
gnomish wizard 5 38
violet fungus 5 34
jellyfish 5 34
Uruk-hai 5 33
Mordor orc 5 33
Kop Lieutenant 5 33
bugbear 5 33
wood nymph 5 28
water nymph 5 28
mountain nymph 5 28
lemure 5 28
ghoul 5 28
killer bee 5 21
leprechaun 4 59
fog cloud 4 37
woodchuck 4 34
rock mole 4 34
imp 4 34
gnome lord 4 33
pony 4 31
straw golem 4 28
rock piercer 4 28
red naga hatchling 4 28
paper golem 4 28
kobold mummy 4 28
guardian naga hatchling 4 28
gray ooze 4 28
golden naga hatchling 4 28
elf zombie 4 28
black naga hatchling 4 28
baby crocodile 4 28
kobold shaman 4 27
Kop Sergeant 4 22
hill orc 4 22
dwarf (monster) 4 22
giant ant 4 20
centipede 4 19
wererat 4 17
werejackal 4 17
rothe 4 17
rabid rat 4 17
monkey 4 17
wererat 3 22
werejackal 3 22
kobold lord 3 22
giant bat 3 22
little dog 3 20
kitten 3 20
homunculus 3 19
orc zombie 3 17
iguana 3 17
floating eye 3 17
dwarf zombie 3 17
orc 3 13
Keystone Kop 3 13
hobgoblin 3 13
gnome 3 13
manes 3 8
garter snake 3 8
cave spider 3 8
shrieker 2 28
large kobold 2 13
hobbit 2 13
gas spore 2 12
red mold 2 9
green mold 2 9
brown mold 2 9
acid blob 2 9
yellow mold 2 8
gnome zombie 2 8
giant rat 2 8
gecko 2 8
coyote 2 8
human 2 6
bat 2 6
kobold 1 6
goblin 1 6
lichen 1 4
fox 1 4
sewer rat 1 1
newt 1 1
kobold zombie 1 1
jackal 1 1
grid bug 1 1


This page is based on a spoiler by Dylan O'Donnell. The original license is:

Redistribution, copying, and editing of these spoilers, with or without modification, are permitted provided that the following conditions are met:

  1. The original contributors to any spoiler must continue to be credited.
  2. Any modifications to the spoiler must be acknowledged and credited.
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