Mechanics Handbook

DPM is damage per minute. OPM is ores per minute, the collection throughput used by Runners and other collectors.

High DPM, low OPM

The mountain sheds ore faster than it can be banked. Add capacity, speed, gathering, or collectors.

Low DPM, spare collectors

Logistics is not the current limit. Invest in attackers, cooldown, crit, or damage upgrades.

Important interaction

Some effects explicitly reuse these outputs: Stonecallers can inherit a share of Runner and Bulldozer OPM, while Spelunker explosives are capped by total DPM.

Decision ruleWatch the ground and worker state together with the number. OPM is not extra damage, and DPM does not guarantee faster Gold income.

When more than 350 ores remain uncollected on the ground, the mountain starts reclaiming them. The game states that reclaiming becomes faster as the backlog grows.

What counts

Uncollected ore on the ground, not ore already delivered to the stash.

What it means

Your damage economy has outrun your transport economy. More ore drops may now produce less real Gold than a logistics upgrade.

Counterplay

Improve Runner throughput or use effects such as Maw's Claim, which can redirect a reclaim to the Great Maw.

Decision ruleTreat recurring reclaiming as a logistics warning, not as a reason to add more damage.

Damaging the mountain fills the calamity bar. When full, the bar resets and triggers a calamity, which can occasionally be beneficial.

Threshold

Based on a random percentage of the mountain's maximum health and its level.

Weapon contribution

Most weapons begin with a 0.5× calamity-damage multiplier. Specific units and upgrades can raise or lower it.

Common mistake

Two weapons with similar direct damage can fill the bar at different rates.

Decision ruleWhen calamities arrive too frequently, inspect calamity multipliers before reducing all damage.

Spelunkers build Underground Mapping automatically, and Gold can buy additional Mapping. Each point reduces bad outcomes for Spelunkers and Treasure Hunters.

Safety cap

The bad-outcome reduction counts up to 300 Mapping. This wording does not say the Mapping resource itself stops growing at 300.

Later scaling

Prestige and building upgrades can convert Mapping into all-dwarf damage, Demodwarf damage, and stronger returning-Spelunker explosives.

Tradeoff

The Explosives Kit gains damage from Mapping, but each tier also raises injury and death odds by 15%.

Decision ruleBuy early Mapping for expedition reliability; value Mapping as damage only after the relevant conversion upgrades exist.

1. 01
   Current run

   Gold, buildings, workers, and ordinary run resources drive the current mountain cycle.

2. 02
   Prestige

   Ends the run, makes accrued Prestige Points spendable, and keeps purchased Prestige upgrades across ordinary runs.

3. 03
   Ascension

   Wipes PP and ordinary Prestige upgrades, but preserves special infinite Tier 6 upgrades and permanently raises Ascension rank.

Decision ruleBefore Ascending, spend useful PP in the Tier 6 upgrades that explicitly survive it.

Some game descriptions expose runtime placeholders instead of one fixed number. Their final value can depend on upgrade tier, unit count, previous casts, linked upgrades, or the current save state.

It does mean

The exact number should be read from the current in-game panel or save.

It does not mean

The mechanic is necessarily random, unknown, or unsupported.

How to use wiki data

Use the page for the relationship and decision rule; use the live panel for the final value in your build.

Decision ruleCompare the live before-and-after value when buying a dynamic upgrade.