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By SKyTheThunder
#209466 There is.

Depending on which "spawn" you mean in that regard it's either this option
Code: Select all    # Chance of a den respawning their boss when the den respawn time is hit
    denRespawnChance=0.30000001192092896
or this one
Code: Select all    # Chance of a den spawning per chunk
    denSpawnChancePerChunk=0.04500000178813934

If you're updating from an earlier version, make sure to regenerate your configs so past artifacts can't mess with new options generating.
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