You’ll be doing a lot of mining as you progress inCore Keeper, whether it’s taking down dirt blocks to get some copper ores at the very beginning of the game or mining out late-game ores from crystalline biomes. There are plenty of pickaxes to get, or sledgehammers for wide-scale wall breaking, but if you want to mine out a huge area, you may want some bombs.

Bombs and grenades both allow you to throw down multiple at a time across a massive area, and have them all detonate one after the other to get plenty of ores, or you could have certain types linked by electronic wires to clear out space for a new build. Some are even great for taking out enemies.

Player character standing next to a wild Bomb Pepper in the Underground in Core Keeper.

How To Craft Bombs

To craft thefirst tier of Bombs, you’ll need tomake an Alchemy Tablefirst, and this becomesavailable to craftas soon as you have aTin Workbench, and is crafted witheight Wood,eight Slime, andfive Tin Bars.

When placed, itgives you accessto low-tier Potions,low-tier Grenades, andlow-tier Bombs, which are primarilymade from Bomb Peppers, a common cooking ingredient and materialfound inThe Undergrounds and the Clay Cave biomes.

Player character using a Laboratory Table and looking at the low tier bombs like Dynamite Pack in Core Keeper.

Bombs and Grenades can also beobtained from Chests, Wooden Crates, Fishing, and occasionally dropped by some enemies, such as Bomb Scarabs.

Themid-tier Bombsare more specialized, andrequire the Laboratory Tableto be made. The Laboratory Table iscrafted at a Scarlet Workbenchor better, andneeds 15 Planksand10 Scarlet Bars.

Player character using a Laboratory Table and looking at the Blunder Bomb recipe in Core Keeper.

Low-Tier Bombs And Grenades

Most low-tierBombs and Grenadescan beset down or thrown, and willexplode a few secondsafter use, but for theDynamite Pack and Explosives Deposit, they’re placed down butonly explode when struckorwhenwired to andtriggered via Lever or Pressure Plate.

Grenades also damage blocks and structures like Bombs, but all have the Wind-Up Throw skill, whichmakes them a better choice when using them against enemies and bosses.

Bomb or Grenade Type

Bomb Pepper x1

Slime x1

Harvest Bomb Pepper plants in The Underground, The Caves, or from a farm.

Slime x2

Bomb Pepper x5

Poison Slime x3

Kill Poison Slimes orIvy the Poisonous MassinAzeos' Wildernessafter defeating the three early game bosses andremoving The Great Wall.

Bomb Pepper x2

Kill Red Slimes, Spikey Red Slimes, or Glurch the Abominous Mass.

Tin Bar x1

Smelt Tin Ore in a Furnace. Tin Ore can be found in The Clay Caves.

Wood x2

Harvest Roots in The Underground or The Clay Caves.

Copper Bar x1

Mid-Tier Bombs And Grenades

TheBlunder Bomb is extremely handy for making long tunnels for railway paths to and from areasthat don’t have a Waypoint near them.

Blasting Dung x1

Scarlet Bar x1

Kill Bomb Scarabs in the Desert of Beginnings before they can detonate on death.

SmeltScarlet Ore in a Smelter Kiln.Scarlet Oreisobtained from Azeos' Wildernessafter defeating the three early game bosses andremoving The Great Wall.

Galaxite Bar x2

SmeltGalaxite Ore in a Fury Forge. Galaxite Ore isobtained from the Desert of Beginningsafter defeating the three early game bosses andremoving The Great Wall. ​​​​​​​

Sulfur Bud x5

Kill Sulfur Worms or fish in the waters found in The Passage.

Blasting Dung x2

Pandorium Bar x3

SmeltPandorium Ore in a Fury Forge. Pandorium isobtained from The Passageafter defeating the three mid-game bosses.

Magma Slime x2

Kill Magma Slimes in the Molten Quarry sub-biome in the Desert of Beginnings.

Poison Slime x2

Kill Poison Slimes or Ivy the Poisonous Mass inAzeos' Wildernessafter defeating the three early game bosses andremoving The Great Wall.

Heart Berry x3

Harvest Heart Berry plants in The Underground, The Caves, or from a farm.