Light sources are objects that emit light. Some are brighter than others and produce varying colors of light.

Primary light sources

These objects are intended to provide light as their primary function.

Furniture

•  Alien Crystal Light
•  Campfire
•  Candle
•  Candle Stack
•  Caveling Fireplace
•  Crystal Lamp
•  Decorated Winter Tree
•  Decorative Torch
•  Easter Egg Lamp
•  Festive Fireplace
•  Festive Wall Lights
•  Lamp
•  Paintable Festive Wall Lights
•  Paper Lantern
•  Roast Firepit
•  Snowball Pyramid
•  Stone Lantern
•  Torch
•  Twisted Roots Torch
•  Valentine's Candles
•  Wall Paper Lantern

Tiles

•  Lit Floor

Lanterns

•  Small Lantern
•  Lantern
•  Pumpkin Lantern
•  Orb Lantern
•  Pearl Lantern
•  Soul Lantern

Critters

•  Yellow Glowbug
•  Blue Glowbug
•  Green Glowbug
•  Red Glowbug

Pet talents

• Spirit Animal

Roof light

Roof lights are natural light sources that generate from the ceiling of caves. They can be created or destroyed by the player using the Roofing Gadget.

Secondary light sources

The following objects produce varying amounts of light, even though it is not their primary function.

Furniture

•  Alien Tech Chest
•  Amalgam Basin
•  Ancient Crate
•  Ancient Fountain
•  Ancient Hologram Pod
•  Ancient Waypoint
•  Anteverse Portal
•  Bait Pillar
•  Bicolor Coral
•  Bottled Anomaly
•  Colossal Cicada
•  Cooking Pot
•  Corrupted Sap
•  Crystal Grass
•  Crystal Meteorite Boulder
•  Cyan Feather Tree
•  Furnace
•  Fury Forge
•  Gem-Jellyfish
•  Glass Smelter
•  Gleam Wood Door
•  Gleam Wood Fence Gate
•  Large Bicolor Coral
•  Lucky Cat
•  Portal
•  Potted Alien Flower
•  Potted Lucent Oak
•  Purple Feather Tree
•  Rift Statue
•  Small Bicolor Coral
•  Small Cyan Feather Tree
•  Small Purple Feather Tree
•  Smelter Kiln
•  Sulfur Bud
•  Sulfur Tree
•  Sun Crystal
•  Tall Crystal Grass
•  Thumper
•  Tombstone

Tiles

•  Gleam Wood Bridge
•  Gleam Wood Fence
•  Ground Magma Slime

Weapons

•  Fireball Staff
•  Ritual Dagger
•  Noxious Meteor Staff
•  Octarine Bow
•  Rune Song
•  Galaxite Chakram
•  Galaxite Dagger
•  Galaxite Sword
•  Zealot's Scimitar
•  Lava Battle Axe
•  Phantom Spark
•  Burnzooka
•  Ricochet Shuriken
•  Chaos Staff
•  Corrupted Meteor Staff

Tools

•  Galaxite Fishing Rod
•  Galaxite Pickaxe
•  Galaxite Shovel
•  Galaxite Sledge Hammer
•  Soul Seeker
•  Obliteration Ray
•  Stormbringer

Helms

•  Makeshift Goggles
•  Pumpkin Head
•  King Slime Crown
•  Octarine Helm
•  Galaxite Helm
•  Magma Horn Armor
•  Miner's Protective Helm
•  Sulfossil Helmet

Chests

•  Octarine Breastplate
•  Galaxite Torso
•  Magma Torso Armor
•  Sulfossil Cuirass

Pants

•  Galaxite Pants
•  Magma Shin Armor
•  Ninja Leggings

Accessories

•  Glow Tulip Ring
•  Octarine Backpack
•  Octarine Shield
•  Omoroth's Necklace
•  Polished Glow Tulip Ring
•  Crystal Meteor Chunk
•  Scorching Aegis

Consumables

•  Glow Tulip
•  Sunrice
•  Lunacorn
•  Golden Glow Tulip
•  Golden Sunrice
•  Golden Lunacorn
•  Box of Chocolates
•  Lunar Cheese
•  Riftian Lampfish
•  Anniversary Cake

Liquids

• Sea water
• Shimmering water

Gallery

Light sources in-game

Torch Torch Hand Decorative Torch Campfire Caveling Fireplace Crystal Lamp Candle Decorated Winter Tree Snowball Pyramid Festive Fireplace Festive Wall Lights Paintable Festive Wall Lights Valentine's Candles Ancient Hologram Pod Fireball Staff Soul Seeker Phantom Spark Hand Phantom Spark Pedestal Rune Song Pedestal Ritual Dagger Pedestal Small Lantern Lantern Orb Lantern Core Iris Crystal Meteor Chunk Glow Tulip Ring Polished Glow Tulip Ring Octarine Bag Glow Tulip (Eat) Glow Tulip (Hand) Glow Tulip (Pot) Golden Glow Tulip (Eat) Golden Glow Tulip (Hand) Golden Glow Tulip (Pot) Ground Magma Slime Electricity Generator Lamp color black Lamp color blue Lamp color brown Lamp color green Lamp color purple Lamp color red Lamp color white Lamp color yellow Lit Floor normal Lit Floor black Lit Floor blue Lit Floor brown Lit Floor green Lit Floor purple Lit Floor red Lit Floor white Lit Floor yellow Yellow Glowbug Red Glowbug Green Glowbug Blue Glowbug

Notes

• The lighting engine was overhauled in 0.5.2.0-b84a, making it impossible to determine the exact radius of light sources due to the addition of intensity and directionality.

Trivia

• Internally Core Keeper is a 3D game, which is how many of the advanced lighting techniques are achieved.

A screenshot of the game with the camera's position adjusted.

History

• 0.7.4.2-7883: Fixed a bug where many light sources would get completely disabled on low light quality settings.
• 0.5.2.2-a842:
  • Lit Floor tiles no longer block other emissive light sources like Glow Tulips.
  • Light colours are now correctly converted to linear space when gathering light data.
• 0.5.2.0-b84a: Completely reworked indirect (bounce) lighting. Light now spreads further and takes surface color into account, resulting in softer, more saturated dynamic lighting.