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 at a slower rate.
• Prior to 0.21, most of the branches in the Dungeon naturally spawned monsters over time. Most of these were out of depth, spawning mostly after 3k turns have passed, stopping after 15k turns.
• 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.