Monster Generation - Revision history

Omega Tyrant: Noted more of the many exceptions to monster spawning depth ranges

2026-03-25T04:26:53Z

Noted more of the many exceptions to monster spawning depth ranges

Omega Tyrant: Big update for 0.10

2025-09-04T04:36:17Z

Big update for 0.10

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Omega Tyrant: Updated/corrected values and reordered based on minimum depth

2024-08-07T19:33:16Z

Updated/corrected values and reordered based on minimum depth

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ZicherCZ at 07:07, 15 November 2017

2017-11-15T07:07:52Z

ZicherCZ: Inserted a notice of the minimum dlvls being adjusted by difficulty levels.

2017-11-15T07:00:05Z

Inserted a notice of the minimum dlvls being adjusted by difficulty levels.

Rabinowitz: cross-links

2013-07-01T15:49:18Z

cross-links

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Rabinowitz: update monster table to 0997

2013-07-01T15:38:15Z

update monster table to 0997

Tehtmi: added arachnotron max level

2011-07-23T02:00:48Z

added arachnotron max level

Game Hunter: moved Generated Monsters to Monster Generation: better name

2011-07-15T04:24:32Z

moved Generated Monsters to Monster Generation: better name

Game Hunter: Created page with "{{Technical}} Each monster has a minimum dlevel, a maximum dlevel, a weight, and a danger rating. Minimum level and maximum level determine whether the monster can appear on a f..."

2011-07-15T04:21:25Z

Created page with "{{Technical}} Each monster has a minimum dlevel, a maximum dlevel, a weight, and a danger rating. Minimum level and maximum level determine whether the monster can appear on a f..."

New page

{{Technical}}

Each monster has a minimum dlevel, a maximum dlevel, a weight, and a danger rating. Minimum level and maximum level determine whether the monster can appear on a floor at all. Weight indicates relative likelihood of appearing. Danger indicates (inversely) how many can be generated.

For the more all enemies that can normally spawn, here are the values.
{| style="rules: cols; border: 2px solid darkred; border-spacing: 0; font-size: 90%; margin: 0.25em 0.5em; text-align: right"
|colspan=5 style="background: darkred; color: yellow; font-size: 120%; text-align: center"|'''Monster Generation Parameters'''
|-
|style="text-align: left"|'''Monster'''
|style="text-align: left; padding-left: 1ex"|'''Minimum'''
|style="text-align: left; padding-left: 1ex"|'''Maximum'''
|style="text-align: left; padding-left: 1ex"|'''Weight'''
|style="text-align: left; padding-left: 1ex"|'''Danger'''
|- style="background: #333;"
|style="text-align: left"|Former Human
|0
|12
|10
|1
|-
|style="text-align: left"|Former Sergeant
|2
|15
|10
|2
|- style="background: #333;"
|style="text-align: left"|Former Captain
|8
|15
|10
|3
|-
|style="text-align: left"|Imp
|0
|17
|8
|2
|- style="background: #333;"
|style="text-align: left"|Demon
|4
|20
|6
|4
|-
|style="text-align: left"|Lost Soul
|6
|16
|10
|3
|- style="background: #333;"
|style="text-align: left"|Hell Knight
|9
|15
|6
|6
|-
|style="text-align: left"|Cacodemon
|10
|50
|6
|6
|- style="background: #333;"
|style="text-align: left"|Former Commando
|12
|17
|6
|7
|-
|style="text-align: left"|Pain Elemental
|12
|20
|2
|6
|- style="background: #333;"
|style="text-align: left"|Baron of Hell
|12
|N/A
|6
|10
|-
|style="text-align: left"|Arachnotron
|13
|N/A
|4
|9
|- style="background: #333;"
|style="text-align: left"|Revenant
|13
|N/A
|5
|12
|-
|style="text-align: left"|Mancubus
|15
|N/A
|7
|12
|- style="background: #333;"
|style="text-align: left"|Arch-vile
|16
|N/A
|4
|14
|-
|style="text-align: left"|Nightmare Imp
|30
|60
|8
|6
|- style="background: #333;"
|style="text-align: left"|Nightmare Demon
|40
|N/A
|6
|5
|-
|style="text-align: left"|Nightmare Cacodemon
|51
|N/A
|6
|10
|- style="background: #333;"
|style="text-align: left"|Nightmare Arachnotron
|50
|N/A
|4
|12
|-
|style="text-align: left"|Nightmare Arch-vile
|90
|N/A
|3
|20
|- style="background: #333;"
|style="text-align: left"|Bruiser Brother
|50
|N/A
|6
|14
|-
|style="text-align: left"|Lava Elemental
|70
|N/A
|1
|16
|- style="background: #333;"
|style="text-align: left"|Shambler
|80
|N/A
|3
|14
|-
|style="text-align: left"|Agony Elemental
|80
|N/A
|1
|20
|- style="background: #333;"
|style="text-align: left"|Cyberdemon
|80
|N/A
|1
|30
|}

Additionally, the are monster groups. Monsters groups have their own minimum and maximum levels and weights that are used instead of the values for the the individual monsters. The effective danger of a group is the sum of the dangers of its monsters.

{|style="rules: cols; border: 2px solid darkred; border-spacing: 0; font-size: 90%; margin: 0.25em 0.5em; text-align: right"
|colspan=4 style="background: darkred; color: yellow; font-size: 120%; text-align: center"|'''Monster Groups'''
|-
|style="text-align: left"|'''Monsters'''
|style="text-align: left; padding-left: 1ex"|'''Minimum'''
|style="text-align: left; padding-left: 1ex"|'''Maximum'''
|style="text-align: left; padding-left: 1ex"|'''Weight'''
|- style="background: #333;"
|style="text-align: left"|1 × former sergeant, 2-6 × former human
|7
|16
|10
|-
|style="text-align: left"|5-8 × imp
|5
|8
|10
|- style="background: #333;"
|style="text-align: left"|1 × hell knight, 2-6 × imp
|9
|12
|10
|-
|style="text-align: left"|1 × baron of hell, 4-9 × imp
|13
|21
|10
|- style="background: #333;"
|style="text-align: left"|1 × former commando, 2-6 × former sergeant
|15
|21
|10
|-
|style="text-align: left"|1 × pain elemental, 3-8 × lost soul
|13
|21
|8
|- style="background: #333;"
|style="text-align: left"|4-9 × demon
|10
|22
|4
|-
|style="text-align: left"|1 × baron of hell, 2-4 × hell knight
|20
|N/A
|4
|- style="background: #333;"
|style="text-align: left"|3-6 × arachnotron
|20
|N/A
|3
|-
|style="text-align: left"|2 × arch-vile, 4 × former captain, 4 × former sergeant, 3-6 × former human
|20
|N/A
|2
|- style="background: #333;"
|style="text-align: left"|2 × baron of hell, 2-3 × former captain, 2-3 × former sergeant
|20
|N/A
|5
|-
|style="text-align: left"|2 × arch-vile, 2-5 × mancubus
|20
|N/A
|4
|- style="background: #333;"
|style="text-align: left"|2 × arch-vile, 2-5 × revenant
|20
|N/A
|4
|-
|style="text-align: left"|2 × arch-vile, 3-9 × baron of hell
|25
|N/A
|4
|- style="background: #333;"
|style="text-align: left"|2 × arch-vile, 2-8 × former captain, 2-3 × mancubus
|25
|N/A
|2
|}

Notice that monster groups are the only way for some enemies to appear on very deep levels.

The minimum level of monsters and monster groups is modified according to difficulty level. (Other numbers are not changed.)
{|
|'''Difficulty'''
|'''Modifier'''
|-
|I'm Too Young to Die
|style="text-align: right"| -0
|-
|Hey, Not Too Rough
|style="text-align: right"| -0
|-
|Hurt Me Plenty
|style="text-align: right"| -3
|-
|Ultra-Violence
|style="text-align: right"| -6
|-
|Nightmare!
|style="text-align: right"| -6
|}

Each level is given a total danger rating depending on depth and difficulty level. Monster placement usually proceeds as follows: while the total danger of enemies placed so far is less than the danger rating of the level, pick a new monster or monster group and add it (entirely) to the level. Picking a monster or group is done using the weights as relative probabilities for all the monsters and groups with a valid dlevel range. When a monster group is picked, all its ranges are resolved uniformly and independently. Each monster is added to a random empty tile; for monster groups, each monster is added separately.

The total danger level is calculated from dlevel as follows:
{|
|'''Difficulty'''
|'''Danger'''
|-
|I'm Too Young to Die
|6 + 2.2 × dlevel
|-
|Hey, Not Too Rough
|0.6 × sqrt(500 × dlevel) = 13.4 × sqrt(dlevel)
|-
|Hurt Me Plenty
|20 × sqrt(dlevel)
|-
|Ultra-Violence
|32 × sqrt(dlevel)
|-
|Nightmare!
|40 × sqrt(devel)
|}

In addition to these monsters, certain level features (e.g. [[Generated Rooms#Vaults|vaults]]) may cause additional monsters to spawn on the level without counting against this limit.

@@ Line 17: / Line 17: @@
 |style="text-align: left"|[[Former human]]
 |0
-|12
+|12{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups and certain level types.|?}}
 |10
 |1
@@ Line 23: / Line 23: @@
 |style="text-align: left"|[[Former sergeant]]
 |2
-|15
+|15{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups and certain level types.|?}}
 |10
 |2
@@ Line 29: / Line 29: @@
 |style="text-align: left"|[[Former captain]]
 |5
-|15
+|15{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups and certain level types.|?}}
 |10
 |3
@@ Line 41: / Line 41: @@
 |style="text-align: left"|[[Demon]]
 |4
-|20
+|20{{Rollover|*|Can continue to spawn up to floor 60 in caves.|?}}
 |6
 |4
 |-
 |style="text-align: left"|[[Lost soul]]
-|6
+|6{{Rollover|*|Can spawn earlier than this below HMP in caves.|?}}
-|16
+|16{{Rollover|*|Can continue to spawn indefinitely after this point in caves and from Pain Elementals.|?}}
 |10
 |3
@@ Line 53: / Line 53: @@
 |style="text-align: left"|[[Hell knight]]
 |9
-|15
+|15{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups and certain level types.|?}}
 |6
 |6
 |-
 |style="text-align: left"|[[Cacodemon]]
-|10
+|10{{Rollover|*|Can spawn in vaults as early as floor 1 on UV/N!, and can spawn on floor 3 in caves on N!.|?}}
-|50
+|50{{Rollover|*|Can continue to spawn up to floor 100 in caves, and indefinitely after this point in vaults and monster groups.|?}}
 |6
 |6
@@ Line 65: / Line 65: @@
 |style="text-align: left"|[[Pain elemental]]
 |10
-|40
+|40{{Rollover|*|Can continue to spawn indefinitely after this point in caves and monster groups.|?}}
 |4
 |6
@@ Line 71: / Line 71: @@
 |style="text-align: left"|[[Former commando]]
 |12
-|21
+|21{{Rollover|*|Can continue to spawn after this point in certain level types.|?}}
 |6
 |7
@@ Line 82: / Line 82: @@
 |-
 |style="text-align: left"|[[Arachnotron]]
-|13
+|13{{Rollover|*|Can spawn as soon as floor 6 in caves on N!|?}}
-|50
+|50{{Rollover|*|Can continue to spawn up to floor 80 in caves, and indefinitely in monster groups.|?}}
 |4
 |9
@@ Line 107: / Line 107: @@
 |style="text-align: left"|[[Nightmare imp]]
 |30{{Rollover|*|Can spawn earlier than this in vaults on UV/N!.|?}}
-|60
+|60{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups.|?}}
 |8
 |6
@@ Line 119: / Line 119: @@
 |style="text-align: left"|[[Elite former human]]
 |40
-|80
+|80{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups.|?}}
 |4
 |6
@@ Line 155: / Line 155: @@
 |style="text-align: left"|[[Elite former sergeant]]
 |60
-|90
+|90{{Rollover|*|Can continue to spawn indefinitely after this point in monster groups.|?}}
 |3
 |8

@@ Line 3: / Line 3: @@
 Each monster has a minimum dlevel, a maximum dlevel, a weight, and a danger rating. Minimum level and maximum level determine whether the monster can appear on a floor at all. Weight indicates relative likelihood of appearing. Danger indicates (inversely) how many can be generated.
-For the more all enemies that can normally spawn, here are the values. Minimum dlvl is adjusted by difficulty level - see below.
+The displayed minimum level is valid for ITYTD and HNTR, and it is smaller at higher difficulties (-3 for HMP and -6 for UV/N!), which means that tougher monsters start appearing earlier in the game. Other values are unaffected by difficulty.
 {| style="rules: cols; border: 2px solid darkred; border-spacing: 0; font-size: 90%; margin: 0.25em 0.5em; text-align: right"
 |colspan=5 style="background: darkred; color: yellow; font-size: 120%; text-align: center"|'''Monster Generation Parameters'''
@@ Line 275: / Line 277: @@
 Notice that monster groups are the only way for some enemies to appear on very deep levels.
 Each level is given a total danger rating depending on depth and difficulty level. Monster placement usually proceeds as follows: while the total danger of enemies placed so far is less than the danger rating of the level, pick a new monster or monster group and add it (entirely) to the level. Picking a monster or group is done using the weights as relative probabilities for all the monsters and groups with a valid dlevel range. When a monster group is picked, all its ranges are resolved uniformly and independently. Each monster is added to a random empty tile; for monster groups, each monster is added separately.

@@ Line 26: / Line 26: @@
 |- style="background: #333;"
 |style="text-align: left"|Former Captain
-|8
+|5
 |15
 |10
@@ Line 68: / Line 68: @@
 |-
 |style="text-align: left"|Pain Elemental
-|12
+|10
 |20
-|2
+|4
 |6
 |- style="background: #333;"
@@ Line 113: / Line 113: @@
 |N/A
 |6
-|5
+|7
 |-
 |style="text-align: left"|Nightmare Cacodemon
@@ Line 132: / Line 132: @@
 |3
 |20
 |- style="background: #333;"
 |style="text-align: left"|Bruiser Brother

@@ Line 81: / Line 81: @@
 |style="text-align: left"|Arachnotron
 |13
-|N/A
+|50
 |4
 |9