Volcanic Biome · Updated October 2026
99 Nights in the Forest Volcano Guide
Turn cultist corpses into loot, summon the Cultist King and fish in lava, while staying clear of the Ram.
- ~50% of runs
- 4 gems = Cultist King
- 150 sacrifices badge
- Checked Oct 24, 2026
The Volcanic Biome replaces the Snow Biome in about half of all 99 Nights in the Forest runs. You can spot it by dead trees, scorched ground and smoke on the horizon.
Its big feature is the Volcano itself. Cultist corpses you throw in come back as random loot, and the gems you earn there summon the Cultist King, one of the hardest bosses in the game.
What to do in the Volcanic Biome
- 1
Kill cultists and keep their corpses in your sack.
- 2
Throw corpses into the Volcano for random loot such as Cultist Gems and Infernal weapons.
- 3
Collect 4 Cultist Gems and place them on the altars in the Cultist King base.
- 4
Fight the Cultist King from range, in daylight, with friends.
- 5
Use the Ammo Furnace and loot Hot Chests for ammo and Sacrifice Totems.
Lava hurts everything that touches it, including you. The Deer and the Owl are immune.
How volcano sacrifices work
Every corpse or totem you throw into the Volcano counts as a charge, and each sacrifice gives a random reward.
| Sacrifice | Charges |
|---|---|
| Cultist, Crossbow Cultist or Juggernaut corpse | 1 |
| Cultist King corpse | 2 |
| Sacrifice Totem (from Hot Chests) | 2 |
| Alien and wolf corpses | Count as sacrifices |
Possible rewards include the Cultist Gem, a Gem of the Forest Fragment, a Crossbow and the Infernal Sword. Store as many corpses as you can; every sacrifice also counts toward the Volcanology badge.
How to summon and beat the Cultist King
- Clear the guards at the Cultist King base, a castle-like building in the Volcanic Biome.
- Find the four altars in front of the tinted glass and place one Cultist Gem on each.
- The King only uses melee. Stay back with a crossbow, rifle or tactical shotgun.
- Fight in daylight. The Ram spawns at night and makes the fight much harder.
- Rewards: coins, the Cultist King Antler, Wildfire potions and an Infernal Sword or Infernal Crossbow.
Volcanic Biome locations
The Volcano
Where you throw corpses and totems for loot.
Cultist King base
Castle with four altars for summoning the King.
Hot Chests
Fire-themed chests; a source of Sacrifice Totems.
Ammo Furnace
Collect ammo here; 50 ammo earns the Metaworking badge.
Lava-isolated chest
A chest surrounded by lava; reach it carefully.
Red and Silver Scrap Huts
Good spots for scrap.
Oil Barrels, the best campfire fuel, spawn here once your campfire reaches level 5 or 6.
Volcanic Biome enemies
| Enemy | HP | Damage | Tip |
|---|---|---|---|
| Scorpion | 50 | 20 | Weak alone but common; 100 kills earn a badge |
| Hellephant | 800 | 30 | Huge HP; can be tamed with 10 pumpkins and 5 cakes |
| Cultists | Varies | Varies | Spawn across the biome; keep their corpses |
| The Ram | Cannot be killed | 25 | Night only; dodge its charge sideways and stun it with a flashlight |
| Cultist King | Boss | Heavy melee | Summoned with 4 Cultist Gems |
See every monster in our monsters guide.
Lava fishing
- Fish in the lava pools with at least a Good Rod; an Old Rod works but catches less.
- Two volcanic fish live here: the Lava Eel (more common) and the Lionfish (rarer).
- It is the same minigame as normal fishing: click when the bar hits the green zone.
- Stay away from the lava edge and fish on quiet nights or early mornings.
Rod upgrades and every fish are in our fishing guide.
Volcanic items and weapons
Infernal Sword
Sets enemies on fire instantly; great for raiding cultist bases.
Infernal Crossbow
Ranged reward from the Cultist King.
Wildfire potion
Spawns lava that sets an area on fire.
Infernal Mine
Blueprint for a trap that deals fire damage.
Infernal Sack
Storage with 20 slots.
Infernal Helmet
Made with a Scorpion Shell and the Cultist King Antler.
Volcanic Biome badges
| Badge | Requirement | Reward |
|---|---|---|
| Resourcefulness | Complete the mystery action (sacrifice a teammate’s corpse) | 3 Blue Flames, 5 diamonds |
| Pest Control | Kill 100 Scorpions | Volcano Statue furniture, 5 diamonds |
| Metaworking | Collect 50 ammo at the Ammo Furnace | 3 Blue Flames, 5 diamonds |
| Volcanology | Make 150 sacrifices | Lava Fountain furniture, 5 diamonds |
Need diamonds faster? Start with our codes. Our script guide explains why auto-farm scripts for sacrifices get accounts banned.
FAQs About the 99 Nights in the Forest Volcano
How do you sacrifice in 99 Nights in the Forest?
Carry cultist corpses or Sacrifice Totems to the Volcano and throw them in. Each one gives a random reward.
How many gems do you need for the Cultist King?
Four Cultist Gems, one on each altar in the Cultist King base.
What do you get from the Cultist King?
Coins, the Cultist King Antler, Wildfire potions and either an Infernal Sword or an Infernal Crossbow.
Does lava hurt the Deer?
No. Lava damages players and most enemies, but the Deer and the Owl are immune.
What fish can you catch in lava?
The Lava Eel and the rarer Lionfish. Use at least a Good Rod.
Can you have the Volcano and Snow Biome in one run?
No. Each run gets one of the two at random.
Conclusion
Save every cultist corpse for the Volcano, turn the gems into a Cultist King fight in daylight, and pick up Hot Chest totems for extra charges. The loot here makes late nights much easier.
Last checked: October 24, 2026.
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