Biome
The Undergrounds地下世界
The area around the Core where you start. Gather basic materials such as wood and copper here and set up your first base.
The Undergrounds is a biome in Core Keeper, #1 in the usual order of progress. Bosses: Glurch the Abominous Mass. Fish you can catch here include Orange Cave Guppy, Blue Cave Guppy, Rock Jaw, Gem Crab.
Bosses in The Undergrounds
Enemies in The Undergrounds (5)
Items found in The Undergrounds (131)
Items you can get in this biome from enemy and boss drops, chests, walls, fishing and breakable objects. Detailed sources and chances are on each item's page.
Dungeons in The Undergrounds
Scenes in The Undergrounds (temples, ruins, camps and more)
Ancient Gateway RuinsAncient Gemstone, Stoneskin Potion, Copper Bar and more
Ancient Hallway Ruins
Ancient Pillar RuinsAncient Gemstone, Glow Tulip, Healing Potion and more
Ancient Square Ruins
Ancient Tile Ruins
Circular Race Track
Core ChamberMake-A-Wish Hat
Dirt CampCaveling Hood, Enrage Potion, Mushroom and more
Dirt Cherry TreeSmall Lantern, Precious Urn
Dirt Fishing LakeIron Fishing Rod, Rusty Fishing Hook
Dirt Mushroom FarmIron Key
Flower Lake
Giant Mushroom Area
Glurch the Abominous Mass' Arena
Golden Heart Berry AltarGolden Heart Berry
Hidden Turf ChestRecall Idol, Heart Berry Necklace, Gold Bar and more
Mysterious Doll Set HouseMysterious Doll Set
Pathway Hut
Ruined RailwayCopper Bar, Wood, Rail
Sand RuinsGold Bar, Ancient Gemstone, Geode and more
Slime Territory
Solitary TreeFlintlock Musket
Turf OasisGlow Tulip, Geode
Turf Patch
Turf RuinsGlow Tulip Seed, Bomb Pepper Seed, Grub Kapok Seed and more
No overview mapUndergrounds Circuit PuzzleRing of Stone, Copper Sledge Hammer, Hand Drill- No overview mapUndergrounds Proximity PuzzleRing of Stone, Copper Sledge Hammer, Hand Drill
Which biome each dungeon and scene appears in is from the Core Keeper Wiki (Fandom) SceneInfo and DungeonInfo data (CC BY-SA 3.0), because scene layouts are not in the game files we can read.
Rare finds from mining walls
| Item | Amount | Chance |
|---|---|---|
| Ring of Stone |
1 | 0.07% |
The chance is the chance to get at least one of the item each time (opening one chest, killing one enemy or one catch). Each time, this table is rolled 1 time(s). Calculated from the drop tables in the game's configuration files (Conf/Loot, Core Keeper 1.3.0.6) the same way the game rolls them.
Fish you can catch
| Item | Amount | Chance |
|---|---|---|
 Orange Cave Guppy |
1 | 37% |
 Blue Cave Guppy |
1 | 29% |
 Rock Jaw |
1 | 21% |
 Gem Crab |
1 | 13% |
The chance is the chance to get at least one of the item each time (opening one chest, killing one enemy or one catch). Each time, this table is rolled 1 time(s). Calculated from the drop tables in the game's configuration files (Conf/Loot, Core Keeper 1.3.0.6) the same way the game rolls them.
Other catches (not fish)
| Item | Amount | Chance |
|---|---|---|
 Copper Ore |
1 | 20.2% |
 Green Kelp |
1 | 18.9% |
 Scrap Parts |
1 | 16.8% |
 Fiber |
1 | 11.8% |
 Wood |
1 | 8.4% |
 Rusty Spoon |
1 | 8.4% |
 Cave Guppy Necklace |
1 | 3.4% |
 Locked Copper Chest |
1 | 2.4% |
 Copper Key |
1 | 2.4% |
 Scuba Fins |
1 | 2% |
 Amber Fish Egg |
1 | 1.7% |
 Crude Bomb |
2 | 1.7% |
 Small Fish Pouch |
1 | 1.2% |
 Golden Starfish |
1 | 0.84% |
The chance is the chance to get at least one of the item each time (opening one chest, killing one enemy or one catch). Each time, this table is rolled 1 time(s). Calculated from the drop tables in the game's configuration files (Conf/Loot, Core Keeper 1.3.0.6) the same way the game rolls them.
Unless a note on the page says otherwise, numbers are read from the game files of Core Keeper 1.3.0.6 (prefabs, configuration files, drop tables and the game's program) and calculated by this site, including upgraded (per-level) values, sell prices and mana costs. Names and descriptions are the game's official English text. Only reinforcing materials, minion and pet attacks and some food values are based on the Core Keeper Wiki (Fandom) data (CC BY-SA 3.0). Core Keeper and its images are © Pugstorm. This is an unofficial fan site.