Terraria Mods Wiki
Treasure Bag.gif Expert Mode-Only Content: This information (or parts of it) applies only to Expert mode and Expert mode worlds.
  • Overloader item sprite
Stack digit 9.pngStack digit 9.pngStack digit 9.pngStack digit 9.png
TypeCrafting material
TooltipUsed to craft swarm summons
When used, all summons in the stack will be consumed
The more consumed, the more bosses will spawn
A Trophy will drop every 10 kills
An Energizer will drop every 100 kills
RarityRarity level: 2
Buy / Sell40 / No value

The Overloader is an expensive material which can be used in the creation of Swarm Boss summoning items, which summon 10 instances of a given boss. It can be bought from Mutant in Expert Mode. By stacking multiple swarm boss summoning items and using them, approximately 10 bosses will appear for every summoning item in the stack. Only about 10 bosses will be active at once, and as bosses die, other bosses will spawn in to replace them until the intended number of bosses is defeated, based on the number of summoning items used.

Swarm bosses are intended to be fought in groups of 100; however, the amount of bosses summoned actually seems to be random. Tests have had the number of bosses vary between 70 and 127 bosses per swarm. It's highly recommended that you greatly exceed the power of the boss you're fighting before you call the swarm in, because even weak bosses can overpower players in sheer numbers.


Used in[]

ResultIngredientsCrafting station

Swarm CrownSwarm Crown
Demon AltarDemon Altar
Crimson AltarCrimson Altar
Worm ChickenWorm Chicken
Brain StormBrain Storm
Overstuffed LarvaOverstuffed Larva
Skull Chain NecklaceSkull Chain Necklace
Deer AmalgamationDeer Amalgamation
Bundle of DollsBundle of Dolls
Swarm CrystalSwarm Crystal
Omnifocal LensOmnifocal Lens
Seismic ActuatorSeismic Actuator
Primal Control ChipPrimal Control Chip
Heart of the JungleHeart of the Jungle
Runic Power CellRunic Power Cell
Jar of LacewingsJar of Lacewings
Dragon Egg TrayDragon Egg Tray
Truffle Worm ClumpTruffle Worm Clump
Zealot's MadnessZealot's Madness
Runic InscriptionRunic Inscription
Goblin War BannerGoblin War Banner
Pirate's BountyPirate's Bounty
Overloaded Pumpkin Moon MedallionOverloaded Pumpkin Moon Medallion
Overloaded Naughty PresentOverloaded Naughty Present
Overloaded Runaway ProbeOverloaded Runaway Probe
Abyss LightAbyss Light (With Thorium)
Void Lens 2.0Void Lens 2.0 (With Thorium)
Jellyfish Resonator 2.0Jellyfish Resonator 2.0 (With Thorium)
Necromantic BladeNecromantic Blade (With Thorium)
Star Caller 2.0Star Caller 2.0 (With Thorium)
Cryo EggCryo Egg (With Thorium)
Charged Bird WhistleCharged Bird Whistle (With Thorium)
Blood SigilBlood Sigil (With Thorium)
Unstable Core 2.0Unstable Core 2.0 (With Thorium)
Golden GladiusGolden Gladius (With Thorium)
Doom Sayer's Coin 2.0Doom Sayer's Coin 2.0 (With Thorium)
ClawbominationClawbomination (With Ancients Awakened)
ClawbominationClawbomination (With Ancients Awakened)
Glowing MasshroomGlowing Masshroom (With Ancients Awakened)
MasshroomMasshroom (With Ancients Awakened)
Fargo's Mutant Mod:
Boom Shuriken (Fargo's Mod).png Weapons • Mechanical Amalgam (Fargo's Mod).png Consumables • Slimy Energizer (Fargo's Mod).png Materials • Mutant (Fargo's Mod).png NPCs • Regal Statue (Fargo's Mod).png Furniture • LumberJack Hat (Fargo's Mod).png Vanity • Portable Sundial (Fargo's Mod).png Tools • Autohammer.png Added Recipes