Monster generation

Version 0.28: This article may not be up to date for the latest stable release of Crawl.

While monsters do not normally spawn once you enter a floor, some effects or branches may generate new monsters as you stay in it. Specifically, there is a "monster generation rate" (MGR), and every 5 turns, there is a (5 in MGR) chance of a monster spawning somewhere on the level; a higher value means a slower spawn rate. This monster will normally fit the branch it was spawned in. The MGR's value varies:

• Pandemonium: MGR starts at 50; after 3k turns, it gradually rises until it reaches 300, at 15k turns.
• Abyss: set to 5, meaning that there will always be a monster spawn every 5 turns.
• During the Orb run: set to 18. Monsters spawn near you, with a special monster set:
  • Pandemonium lord: 10%
    • Further 10% chance for this to be either a seraph, Boris (if not somewhere else), or a unique Pan lord (if you have their rune without killing them).
  • Orb Guardian: 15%
  • Tier-1 demon or Tier-2 demon: 25%
  • Tier-4 demon or Tier-3 demon: 10%
  • Any monster from the Pandemonium: 40%

For worshippers of Cheibriados, the MGR in the Abyss or while holding the Orb of Zot is doubled (or half the spawn rate).

History

• In 0.23, the Orb run's spawn set was changed to be spawn more difficult monsters, but slower.
• Prior to 0.21, the most branches in the Dungeon naturally spawned monsters over time. Most of these were out of depth, spawning mostly after 3k turns have passed.
• Orb run spawns were changed in 0.13: the most notable additions were Orb Guardians and eyeball monsters.
• Prior to 0.6, there was no special function to create out of depth monsters when staying in one area.