How to Get Lava Ore
FarmingHow to get Lava Ore (5% Marine Captain drop) and Lava Key — use both to summon Mace Boss for the Mace V1 sword and Coded Mask.
Lava Ore — How to Get & Use
Lava Ore is a boss-summoning item used exclusively to spawn the Mace Boss in Sea 1. It is NOT a crafting material.
How to Get Lava Ore
| Detail | Value |
|---|---|
| Source | Marine Captain (boss) |
| Location | Marine Base Town (Sea 1, Level 1,200–1,300 area) |
| Drop Rate | 5% |
| Respawn Time | ~20 minutes |
The Marine Captain patrols Marine Base Town. Only this specific enemy drops Lava Ore — regular Marines in the area do not.
⚠️ There is no way to get Lava Ore from cave exploration, chests, or other enemies. The Marine Captain is the only source.
How to Get the Lava Key
Before you can use Lava Ore, you need the Lava Key:
| Detail | Value |
|---|---|
| Location | On a table near the Marine Base Town spawn point |
| Use | Unlocks the caged door behind Marine Base Town |
The key respawns on the table and can be picked up freely — no boss fight required.
How to Summon the Mace Boss
Once you have both the Lava Key and 1 Lava Ore:
- Go behind Marine Base Town to find the caged door
- Use the Lava Key to unlock the gate
- Enter the cave and find the cauldron inside
- Place 1 Lava Ore into the cauldron
- The Mace Boss spawns immediately
⚠️ You must deal at least 20% of the boss’s HP to qualify for rewards. Tagging it and running won’t work.
Mace Boss Rewards
| Reward | Drop Rate | Details |
|---|---|---|
| Mace V1 (sword) | 100% | Z: Earth Crash (AoE ground slam), X: Bagua (charge attack) |
| Coded Mask (accessory) | 100% | Head slot accessory |
| 15 Gems | Guaranteed | — |
| $5,000 | Guaranteed | — |
| 700 Bounty | Guaranteed | — |
Mace V1 is a solid early-game sword with two damaging moves. Combined with the Coded Mask accessory, the Mace Boss is one of the most rewarding early super bosses in Sea 1.
Tips
- Farm the Marine Captain efficiently: Bring high single-target damage. At 5% drop rate, expect ~20 kills on average.
- Grab the Lava Key first: The key sits on a table near the Marine Base spawn — pick it up before farming the Captain so you’re ready to go immediately.
- Boss respawns: The Mace Boss respawn timer is separate from the Marine Captain — you can farm both in parallel if you have multiple Lava Ores.
- Related items: The game also has Ice Ore (100% from Snow Harpy boss on Half Cold Island, requires SeaBeast Core given to Blacksmith first) and SeaBeast Core (20% from Sea Beasts). Both are used at the Blacksmith for SeaBeast Armor and Helmet — see the Accessories page.
See the Super Bosses guide for full boss farming strategies.