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Ore Drop Pipeline

This page connects the ore value table to the drop pipeline. Damage and luck feed drop chance, then a count/value allocator can bias toward gems, handle overfill/jackpot cases, and exit early when no valid ore remains.

Max Ore DropsMountain levels 1-50 usually drop 1 ore item, with occasional 2-3 item drops. Levels 51-100 gradually shift toward fewer drops, ending around 48% no drop, 47% one drop, 4% two drops, and 1% three drops; level 100+ keeps those odds.
Gem PreferenceIf a hit deals at least 15 damage and has gem bias, it can force a single gem roll. The chance starts at 12%, increases with gem bias and luck, and caps at 60%.
Gold Per Damage Base0.5
Primary LeversDamage share, luck, mithril luck, gem bias, ore values, and selection weights.
RankOre/GemValueWeightKind
1MithrilSpecial resource100Ore
2Massive Pure Gold100025Ore
3Oathgold20050Ore
4Huge Pure Gold120110Ore
5Adamantine10080Ore
6Sungold47130Ore
7Coreheart4270Ore
8Diamond34120Gem
9Pink Diamond333Gem
10Deep Pearl332Gem
11Ruby30120Gem
12Emerald25110Gem
13Large Pure Gold25180Ore
14Sapphire24110Gem
15Topaz22110Gem
16Amethyst21110Gem
17Medium Pure Gold17160Ore
18Large Gold Ore1585Ore
19Small Pure Gold12110Ore
20Medium Gold Ore1165Ore
21Small Gold Ore725Ore
MechanicPlayer MeaningRelated Systems
Damage progressEach hit contributes to a hidden mithril/drop progress pool based on damage dealt relative to mountain max HP.Damage, mountain health, mithril luck
Drop count curveEarly mountains mostly drop one ore item per successful drop. Higher levels add more zero-drop outcomes, so raw hit count matters less without luck/value scaling.Mountain level
Gem preferenceBig enough hits with gem bias can force a gem roll; the chance starts low and caps at 60%.Gem luck and gem-focused upgrades
Ore value allocatorWhen a drop happens, the game spends a value budget across eligible ore/gem entries using their values and selection weights.Ore and gem value table
Overfill and jackpot handlingVery large value budgets can produce overfill/jackpot behavior instead of a simple single low-value ore.High damage and value modifiers
Mithril routesMithril is separate from ordinary gold value: damage progress, den loot, spelunking, artifacts, and prestige can all add mithril paths.Mithril guide
EntryType / BuildingEffect / Use
ArkenstoneArtifactA heart of the mountain that glows with starlight. Collect: +5 PP. Passive: All ores and gems are worth +20% more gold. Required to access the Great World Spire.
Bag Of Overflowing GoldArtifactEndless gold pours out of this bag. But only when it feels like it. Passive: Every 5-7 minutes, you gain 700-1400 gold and +0.3-0.6% of your total gold.
Bob-omb's IdolArtifactPassive: Demodwarf's BIG BAD BOMB has +2% chance to trigger, and its 1st tier costs 100% less gold and mithril to buy. Additionally, Wind Bomb gets +4 force.
Bottled DwarfArtifactCollect: +1 dwarf, +1 mithril and +1 PP.
SplashstoneArtifactA rune-carved stone dropped into every barrel, making each keg burst wider and louder. Passive: Ox-Lung Lager and Bling-Barrel Brew get +20% radius.
Broodstone IdolArtifactPassive: When a den is destroyed, there is a 12% chance to spawn another den or mithril vein.
Cat's Eye DiamondArtifactCollect: Diamonds start raining for a brief moment. Passive: Diamonds are worth 25% more.
Chaos OrbArtifactCollect: +0-3000 gold, +0-3 mithril, +0-3 PP, spawn 0-3 dens, and trigger 0-3 calamities.
Chromatic AnvilArtifactPassive: All Runes cost -25% gold.
Coffer Of Overflowing GoldArtifactEndless gold pours out of this coffer. But only when it feels like it. Passive: Every 5-7 minutes, you gain 1250-2500 gold and +0.5-1.0% of your total gold.
Aegis MedallionArtifactPinned to the chest of those who never drop a load. Passive: Whenever a Runner reaches his maximum carrying capacity, he gains a magical shield that protects him from falling rocks for 15-30 seconds.
Crown Coin of the First KingArtifactCollect: +700 gold and +2 PP.
Crown GemArtifactCollect: +2000-3000 gold and +2 PP.
Crystal SkullArtifactPassive: All dwarves have +10 gem luck. Slightly increased chance of an extraterrestrial encounter.
Deep Gnome BlingArtifactThe Deep Gnomes, distant relatives to Dwarves and Leprechauns, are master crafters of fortune magick trinkets. Passive: Runners get +35 Luck but -12% Speed.
Deep Vault FragmentArtifactCollect: You get 1-2 mithril and +2 PP.
Dial of DestinyArtifactCollect: +5 PP, +1 Soul and +10 Mithril. Required to access the Great World Spire.
Divine Gem PolishArtifactPassive: All gems are worth 20% more.
Dragon's ClawArtifactIf there is a fire that never ceases to burn, it surely lies in the maw of a dragon. Passive: Flamer's Draconic Salvo costs 50% less gold and can fire 1 additional projectile.
Dragon's EggArtifactCollect: +7 PP and triggers the Rain of Gems calamity 7 times. Passive: Required to access the Great World Spire.
Dragon's EyeArtifactPassive: Fire deals +0.01 damage per stack for every 1000 gold you have, up to +1 damage max. Additionally it deals +0.01 damage per stack for every 50,000 gold you have, up to +10 damage max.
Exalted Gem PolishArtifactPassive: All gems are worth 15% more.
Falling Star OrnamentArtifactCollect: A golden star falls from the sky. Passive: Whenever a falling rock is destroyed by a turret, it has increased chance of dropping gems.
Fertility IdolArtifactPassive: Underground Housing costs 5% less gold. Whenever you buy Underground Housing, there's a 50% chance to gain +1 dwarf.
Fire Titan CoreArtifactThe blazing heart of an ancient fire demigod. Passive: Flamers get +20% damage.
Quickbeer DispenserArtifactA dose of magical ale is dispensed to the returning runner. Passive: Whenever a Runner delivers a payload, he has a 20% chance to gain +50% speed, +100% gathering speed and +30% dodge for 12-16 seconds.
Foreman's ForehammerArtifactPassive: Underground Housing costs 10% less gold.
Forgeheart EmberArtifactPassive: Whenever you use the Forge Artifact ritual, all dwarves gain +30% damage and +10 mithril luck for 20 seconds.
Gemstorm IdolArtifactPassive: Whenever you collect an artifact, there is a 70% chance to trigger a Rain of Gems calamity.
Giant Mithril NuggetArtifactA massive nugget of pure mithril, heavy and shimmering. Collect: You get 3-6 Mithril.
Gilded Duke's EmblemArtifactPassive: Duke Cannon has a 5% chance to fire a huge golden cannonball with +40 Luck and +50% crit damage. Chance is increased by 1% per Priest and 0.01% per Luck.
Goblin's Curse JarArtifactCollect: +600-1200 gold. And you are definitely not cursed.