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Spelunker's Guild

Spelunkers, treasure hunters, dens, artifacts, mithril, PP, and underground mapping.

Main useSpelunkers, treasure hunters, dens, artifacts, mithril, PP, and underground mapping.
When to prioritizePrioritize once dens and mithril matter; it connects expeditions, artifacts, PP, and mapping.
Upgrade chain12 linked upgrades on this page.
NameWhat It DoesCost / Tiers
Thunderline NetworkLess time to return based on the listed upgrade value.Gold: 350
Mithril: 1
10 tiers
Ancestral LoreIncreases the odds of spelunkers retrieving PP by the listed upgrade value. In general, each time spelunker obtains PP, the base odds are reduced by flat 0.1%.Gold: 200
Mithril: 1
6 tiers
Drums In The DeepIncreases the chance of multiple dens appearing by the listed upgrade value when mountain reaches half health or is destroyed.Gold: 400
8 tiers
Explosives KitSpelunkers are now kitted with timed explosives, which they plant deep inside the mountain as a parting gift. Whenever a spelunker returns, the spelunker deals a listed share of mountain max health as damage.Gold: 2500
Mithril: 1
6 tiers
Grand LodgeWhenever a Spelunker returns, all dwarves gain bonus damage for the listed duration. Whenever a Treasure Hunter returns, they instead gain bonus damage for the same duration.Gold cost not shown until unlock
Mithril cost not shown until unlock
2 tiers
Mithril DiviningThrough star-etched crystals and ancient runes, dwarven seers divine the whispers of mithril veins. Increases Mithril luck of all dwarves by spelunker mithril luck.Gold: 300
10 tiers
Relic RaidingIncreases the chance that dens drop artifacts by the listed chance.Gold: 200
Mithril: 1
9 tiers
SpelunkerEach spelunker returns after the listed return time with one weighted outcome: gold scaled by mountain level and mapping, 1-3 mithril, mithril plus 1-3 revealed mithril veins, 1-3 dens, nothing, an injury with doubledGold: 0
Gold base: 180
Dwarves: 1
Treasure HunterEach treasure hunter returns after the listed return time with one weighted outcome: a random artifact, a unique Tier 5 artifact, 2-4 mithril, 1-3 PP, 1 soul, a trap calamity, an injury with doubled rest, a graveGold cost not shown until unlock
Dwarf cost not shown until unlock
Antiquities ExpressLess time to return based on the listed upgrade value.No direct listed cost
Treasury AcquisitionDwarves have an entire tree of science dedicated to maximum treasure extraction, which often means turning every nook and cranny, finding every last hidden vault, then blowing it all up just in case.Gold: 150
11 tiers
Underground MappingRepresents how much the underground has been cartographed. Spelunkers do this automatically on their own, but gold can always grease its way towards deeper information.Gold: 230
15 tiers
SoundPreviewLength
Building Construction1.99s
Building Rising6.19s
Select Building0.16s