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Old April 5, 2020, 15:30   #12
Join Date: May 2012
Location: Adelaide, Australia
Posts: 2,347
wobbly is on a distinguished road
Vault monsters are picked the same way as any monster (with exact same routine) just usually with a boosted depth. If it's placing a depth + 5 monster it's just as likely to be a unique as if you were 5 levels deeper. Under depth uniques are even less likely in the vault then on the level as they are even more under depth, though they can end up there just by sheer quantity of vault monsters.
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