The Betweenlands Wiki

Fireflies are passive insect mobs that are primarily intended to add more life and atmosphere into The Betweenlands.


Fireflies can spawn in all biomes on the surface of The Betweenlands, except for Swamplands Clearing biomes. However, they will only spawn if the Rift event is not active, or only during the night if it is active.


Fireflies slowly fly around aimlessly. They can serve as light sources, since they give off orange-tinted dynamic lighting. They periodically turn this light off and on as they fly slowly around.

During the Heavy Rain event, Fireflies will seek shelter from the rain under blocks.

Fireflies can be killed in one hit using a rare loot weapon, the Critter Cruncher.


If they manage to be caught, Fireflies can be right-clicked with a Net to capture them as an inventory item. This item can then be right-clicked on the ground to release the Firefly as an entity there.



Caught Firefly items have a chance to be desired by a hatched Chiromaw Hatchling juvenile, as part of the process of raising it. If desired, they can be right-clicked onto the juvenile to feed it.

Crafting Uses

Result Ingredients Recipe
Blank Amate Paper Lantern Firefly (item) + Weedwood Plank Slab (3) + Any Amate Paper Pane (2) + Weedwood Planks (3)
Blank Amate Paper Lantern.gif
Silt Glass Lantern Firefly (item) + Weedwood Plank Slab (3) + Silt Glass Pane (2) + Weedwood Planks (3)
Silt Glass Lantern.png
Weedwood Rowboat Lantern Upgrade Firefly (item) + Weedwood Plank Slab (3) + Reed Rope (2) + Weedwood Planks (3)
Weedwood Rowboat Lantern Upgrade.png


The drops from Fireflies are derived from the firefly loot table. However, this contains no content by default.

Visit the Loot Tables page for more information on loot.


Advancement In-game Description Parent Actual Requirements ID
Critical Hit
Slay a critter with a Critter Cruncher Chopping Boy Kill a Blood Snail, Dragonfly, Firefly, Leech, Mire Snail, Sporeling, or Termite with a Critter Cruncher fighter


  • Release 3.7.1: Updated Spawn Egg colors.
  • Release 3.6.0:
    • Caught item can now be desired by hatched Chiromaw Hatchling juveniles.
    • Caught item can now be used to pull Draetons.
  • Release 3.4.0: Renamed from Fire Fly to Firefly.
  • Release 3.3.1: Now only spawns if the Rift is inactive, or during the night when it is active.
  • Release 3.3.0:
    • Now seeks shelter during the Heavy Rain event.
    • Added Advancement.
  • Beta 2.0.0:
    • Now has an actual model.
    • Now periodically flashes its light on and off.
  • Beta 1.0.0: Introduced.
The Betweenlands Mobs
Passive Blind Cave FishDragonflyFireflyFrogGeckoGreeblingMire SnailRoot SpriteSporeling
Neutral Greebling RiderLurkerPyrad
Aggressive AnglerBlood SnailChiromawCrypt CrawlerDark DruidEmberling ShamanInfestationLampreyLeechLiving RootPeat MummyShallowbreathShamblerSilt CrabSludge (Smol) • Sludge Worm (LargeSmallTiny) • Sprites (AshBoulder) • StalkerSwamp HagTar BeastTermiteWight
Tamable & Utility EmberlingHarlequin ToadTarminion
Chief BarrisheeChiromaw Matriarch
Boss Dreadful Peat MummyPrimordial MalevolenceSludge MenaceSpirit Tree
Unimplemented Temple Guardian
The Betweenlands Items
Materials Amate PaperAmulet SocketAncient RemnantAngler ToothCremains • Dentrothyst Shards (GreenOrange) • Dragonfly WingDried Swamp ReedDry BarkItem Scroll (Fabricated) • Loot ScrapsLurker SkinMiddle GemsMud BrickOctine Ingot (Nugget) • Poison GlandReed RopeRubber BallScabystShambler TongueSlimy BoneSludge Ball • Snail Shells (CrimsonOchre) • SulfurSwamp KelpSwamp ReedSyrmorite Ingot (Nugget) • Tar Beast HeartTar DripUndying EmbersValonite Shard (Splinter) • Weedwood BowlWeedwood Stick
Consumables Ball of SapCandiesCandy CaneChiromaw WingChristmas PuddingCrabstick • Donuts (Gert'sJamReed) • Forbidden FigFried Swamp Kelp • Jellos (SapSludgeWhite Pear) • Marshmallows (GreenPink) • Mince PieMire ScrambleMire Snail Egg (Cooked) • Mushrooms (Black HatBulb-CappedFlathead) • Nettle SoupNibblestickPuffshroom TendrilRaw Angler Meat (Steak) • Raw Frog's Leg (Fried) • Raw Snail Flesh (Seared) • Rotten FoodSilt Crab ClawSpirit FruitSushiTainted PotionTangled RootWeeping Blue Petal (Salad) • White PearWight's HeartYellow Dotted Fungus
Equipment Ancient Battle AxeAncient Greatsword • Armor Sets (AncientBoneLurker SkinSyrmoriteValonite) • Arrows (Angler ToothBasiliskOctinePoisoned Angler ToothShockSludge Worm) • Betweenstone Pebble • Bows (PredatorWeedwood) • BucketsChirobarb ErupterChiromaw BarbCritter CruncherExplorer's HatHag HackerNetRubber BootsSimple Slingshot • Shields (BoneDentrothystLiving WeedwoodLurker SkinOctineSyrmoriteValoniteWeedwood) • Shockwave SwordSkull MaskSludge Slicer • Spirit Tree Face Masks (LargeSmallSmall Animated) • Swift PickSyrmorite Shears • Tool Sets (BoneOctineValoniteWeedwood) • Valonite GreataxeWight's Bane
Herblore Aspect VialsAspectrus FruitBottled FogBottled Shallowbreath • Dentrothyst Vials (DirtyGreenOrange) • Ground ItemsHerblore BookInfusion BucketsInfusionsPestlePlant ItemsSickle
Other Items Amate Map (Empty) • Amulet (Bark) • Amulet SlotAngry Pebble (Inanimate) • Aspectrus SeedsBone Wayfinder • Caught Critters (Chiromaw HatchlingDragonflyFireflyGeckoTamed Chiromaw) • Caving RopeClimbing RopeCompostDoorsDraeton (Upgrades) • Gallery Frames (LargeSmallVery Large) • Gem SingerGrappling HookGround Dried Swamp ReedLife Crystal (Fragment) • Limestone FluxLore ScrapLurker Skin PatchLurker Skin PouchMagic Item MagnetMoss BedMud Brick Flower Pot (with Candle) • Mummy BaitMusic DiscsPlant TonicPyrad Flame • Rings (AscentDispersionGatheringPowerRecruitmentSummoning) • Root PodRune Door KeySap SpitShimmerstoneSludge Worm Egg SacSporesSwamp TalismanSyrmorite HopperTarminion (Inanimate) • VolarkiteVoodoo DollWall CandleWeedwood Rowboat (Upgrades) • Weedwood SignWhite Pear SeedsWisp
Unimplemented Armor of LegendsGuide BookKraken Tentacle (Kraken Calamari) • Snapper RootStalker EyeSword of Legends