Surtling Core

Surtling core is a crafting and building material used in several important mid- and late-game recipes. It is one of the key drops from Surtlings and also appears as loot in Burial Chambers, making the Black Forest an early reliable source. Later in the game, it can also be recovered by recycling or destroying certain structures and fixtures found in hostile and inhabited biomes.

Surtling cores are obtained from several places:

• Burial Chambers
• Dropped by Surtlings
• Recycled from bonfires in captured Fuling villages
• Chance to obtain from destroying naturally spawned Dvergr lanterns
• Found in chests and on stands in some structures, including Dvergr settlements and towers

They are especially valuable because many progression-critical stations and utilities require them. Surtling cores are used in the construction of:

• Charcoal Kiln
• Smelter
• Portal
• Stone Oven
• Blast Furnace
• Fire pit / large bonfire-type structures
• Ward-type defensive structures
• Some advanced crafting stations and magical crafting setups
• Raid and siege equipment such as the battering ram

Because multiple essential production buildings require Surtling cores, it is usually worth saving them rather than spending them on optional decorations or low-priority builds. The Charcoal kiln and Smelter both consume a significant number of cores, so players who want to begin metal processing early should prioritize Burial Chambers and Surtling hunting.

Surtlings themselves are a dependable source once their spawn locations are located, and their drops can be farmed repeatedly. In addition, exploring captured Fuling villages and Dvergr outposts can provide more cores than dungeon runs alone, especially if you are already traveling through those biomes for other resources. Natural Dvergr lanterns are a useful opportunistic source as well, since they can be recovered while looting settlements rather than through direct farming.

In the game’s miscellaneous notes, Surtling core is also associated with fireworks.