Core Keeper
by Pugstorm · 27 Aug, 2024
397 downloads
About the Game
Awaken as an explorer in a long-forgotten cavern teeming with untold secrets. In this award-winning, 1-8 player mining sandbox adventure, your choices shape an epic journey. Harvest relics and resources, craft advanced tools, build your base, and explore a dynamically evolving world waiting to be unearthed.
Level up your skills, defeat legendary Titans, and unveil the power of the Core. Grow your garden, fish in mysterious waters, master a vast array of recipes, raise and care for animals, encounter the Cavelings, and carve out your own unique world in an enchanting underground adventure.
- MINE RESOURCES
Delve deep to harvest precious resources and unearth hidden gems. Craft tools to help you survive, from pickaxes, fishing rods, and shovels to traps, bombs, and mortars. Upgrade your arsenal and equipment with advanced tools like the mighty Obliteration Ray, and automated machinery to streamline mining, smelting, storage, and more. Level up your skills and unlock powerful weapons to conquer the depths.
- DISCOVER AN ANCIENT WORLD
Explore diverse biomes with unique ecosystems and long-forgotten lore. From the living walls of the Clay Caves to the crystal caverns of the Shimmering Frontier, discover more about this mysterious world as you uncover the secrets of the Cavelings. Build a boat to set sail across the Sunken Sea, race across the Desert of Beginnings, and encounter the remnants of ancient civilizations.
- BUILD, CRAFT & GET CREATIVE
Create a totally unique base using a variety of different materials and customisations. From the ultimate adventurer’s lair to a cozy underground cottage, shape the underground your way. Customize your character’s appearance and choose from an array of powerful armor and unique outfits to suit the moment.
- BATTLE TITANS
Face legendary Titans that hold the secret to this long-forgotten world. Sharpen your combat skills against a variety of monsters and mini-bosses, spend talent points to level up your abilities, and plan your strategy to conquer these colossal creatures of the underground. Discover rare and powerful loot to help you on your journey and power up the Core.
- EXPLORE WITH FRIENDS
Enjoy the adventure solo or team up in 2-8 player drop-in/drop-out online co-op. Play your way and explore at your own pace — celebrate the seasons, trade with merchants, hatch your new best friends, design the ultimate base, automate resource gathering, host your own dedicated server, create music on playable instruments and discover an unforgettable sandbox adventure.
Screenshots
13 images
Version Information
Steam Patch Notes
Official update history
CK 1.3.0.6 - Hotfix
Bug Fixes
Fixed an issue that would prevent Steam Free Weekend players from entering a world.
1.3.0.5 - Stability Patch
Modding
Water painted in the ModSDK's custom scene editor now uses its in-game color, making it easier to tell water types apart.
Tiles without an icon in the ModSDK's custom scene editor now get a button preview generated from their tileset sprite sheet instead of an empty button.
Added a "Hide Placeable Objects" toggle to the ModSDK's custom scene editor, which hides placed objects in the Scene view so only tiles are visible. This makes it easier to paint tiles in scenes with lots of objects.
Fixed object IDs of modded objects depending on the order mods were loaded in, which could cause modded objects to get mixed up when the load order changed.
Fixed Steam Workshop mods still being loaded when launching the game with the no mods option.
Fixed modded tilesets using a tilesetType value outside the Tileset enum causing other tilesets to go missing.
Bug Fixes
Fixed a crash that would happen when switching off-hand items or equipment loadouts while using a Hookshot or a Gilded Hookshot.
Fixed an issue where overlapping rooms in the Chamber of the Veil Crux could prevent a pedestal from appearing.
Fixed an issue where cicadas spawned by Nimruza, Queen of the Burrowed Sands, could wander toward the Core.
Fixed an issue where the Void-Fused armor set bonus could trigger an explosion after the player respawned, even though the explosion should have been canceled on death.
Fixed an issue where the health bar briefly dropped when switching to an equipment loadout with higher maximum health.
Fixed an issue where Training Dummies placed on Ancient Wire could not be picked up with a shovel.
Fixed an issue where removing explosive walls in Creative worlds while god mode is enabled caused them to detonate and set off nearby explosive walls.
Fixed incorrectly placed tiles in one of the puzzle scenes in the Breaker's Reach biome.
Flame Turret firing effects now stop when Creative worlds are paused.
Reverted a network data limit added in the 1.3.0.3 update.
Fixed an issue where the prompt to skip the intro displayed an Xbox button icon when using a PlayStation controller.
1.3.0.4 - Hotfix
Bug Fixes
Fixed spike traps, drills and certain other hazards not dealing damage.
Fixed some traps and other continuous damage sources having a short delay before doing their first damage tick.
1.3.0.3 - Stability Patch
Gameplay
Mounts are no longer permanently removed when attacked by bosses.
Game Balance
Increased the figurine drop chance for Void Caveling, Void Caveling Shaman, and Void Caveling Brute.
Modding
Increased the ghost component cap from 256 to 512.
Made necessary runtime changes to add support for PugText previews in the ModSDK.
Added an event, ECSManager.BeforeInitialEntityConversion, which can be used in IMod.EarlyInit or IMod.Init to add components to entities before conversion.
Fixed an issue where an entity using ObjectID.None caused the player's character to hold that entity's representative graphical object in-game even when nothing was selected in the hotbar.
Fixed an issue where UGC materials weren't being swapped to their runtime variants.
Fixed an issue where adding required materials beyond the cap resulted in excessive error log spam, which lagged the game.
Fixed graphical object data block overloads not pooling the correct graphical object.
Fixed the revealExploredAreas console command so it works again in PC builds.
Miscellaneous
Big Larva enemies target Kinematic Dynamos again.
Bug Fixes
Bomb Scarabs now drop only one piece of armor at a time.
Moolins and Dodos now correctly play sound effects when eating.
Mounts and Go-Karts no longer honk while the player interacts with the map.
Using a hoe to harvest Moorshrooms and Glowing Mushrooms no longer also removes the Mossy Soil/Muddled Moss beneath them.
Pets now stop attacking Training Dummies after their owner leaves combat.
The character stats window no longer scrolls while browsing your inventory.
Sledge Hammers now show the correct feedback when they cannot mine an ore boulder.
Metal Industrial Boxes and Reinforced Industrial Boxes are now visible on the map and minimap.
Colossal Amoebas no longer play duplicate destruction effects when defeated.
The Heartbound horde talent from the Summoning skill tree now correctly shows the bonus gained from the player's max health.
Inaccurate button hints are no longer displayed in the map marker customization menu when using a controller.
Right-clicking the same map marker preset twice now closes the customization menu.
Map markers no longer make the controller cursor shake when hovered over.
Teleport casting effects no longer linger when mounting or entering a vehicle during a cast.
Titan Breath now plays its aiming animation while charging its secondary attack.
Feeding pet candy to Cattiva no longer triggers a barking sound effect.
Thin Glass Walls can now be placed beside other walls without the placement being blocked.
Keyboard bindings now work for panning the map.
Hive Larva Figurines and Big Hive Larva Figurines now spawn the correct larva variants in the Materializer.
Portals no longer continue charging while a Creative world is paused.
The character customization menu now closes when the Magic Mirror being used is destroyed.
Critters caught with a Bug Net now join existing stacks before filling empty hotbar slots.
Cattle now wait until crops are fully grown before eating them.
Torches can now be placed on walls when the player is standing close to them.
Floracadas no longer leave indestructible floating ore behind when emerging beside ore walls.
Fixed an issue where ground placed over a naturally spawned decoration in the Mold sub-biome could no longer be shoveled.
Fixed an issue where worlds created before 1.0 would not be displayed as "Classic" worlds in the world selection menu.
Fixed an issue where merchants would sometimes spawn inside objects and walls.
Fixed an issue where characters could remain visually asleep after leaving a world while sleeping or switching characters.
Fixed an issue where some instruments and UI sounds weren't mapped to their correct mixer groups.
Fixed an issue where Urschleim could appear with missing body segments.
Fixed an issue where summoned minions could prevent players from digging with a shovel.
Fixed the music repeatedly restarting during the Core Commander fight.
Fixed the repair and reinforce cursor icons remaining active after closing the Salvage and Repair Station's interface with a controller.
Fixed the placement animation not playing for the Paradise Tree and some other large objects.
Fixed secondary attacks from Rune Song, Crystal Shard Club, and Void Club dealing less damage than intended.
Fixed Shrooman Brutes regaining their armor early when knocked back by slime pets or other attacks.
Fixed Large Desert Flower Vessels and Large Oasis Flower Vessels leaving their shadows behind when destroyed.
Fixed an issue where text in Thai would render incorrectly.
Fixed an issue where C# exceptions could crash the game with a segfault instead of being handled gracefully.
[Linux, Steam Deck] Fixed the game freezing when trying to quit after exiting a world.
[PlayStation 4] Fixed profanity filtering causing issues when playing offline.
[PlayStation 4, PlayStation 5] Fixed the tops of walls being completely black.
CK 1.3.0.2 - Hotfix
Bug Fixes
Fixed an issue where drills would cause damage on the first game tick after receiving power. This broke some circuitry builds that rely on drills for item sorting.
1.2.1.5 - Hotfix
Bug Fixes
Fixed a crash caused by interacting with S.A.H.A.B.A.R.'s summoning console.
1.2.1.4 - Stability Patch
Bug Fixes
Fixed an issue that caused Beds to kick players out after one frame.
Fixed an issue where it was possible to hold to craft items from boss statues before they were unlocked.
Enemies that destroy tiles when they spawn can no longer destroy unbreakable tiles. For real this time!
[PlayStation, Switch, Xbox] Fixed a crash caused by interacting with the S.A.H.A.B.A.R summoning console.
1.2.1.3 - Stability Patch
Gameplay
The following items can now be picked up with a hoe or shovel:
Explorer Proximity Sensor
Enemy Proximity Sensor
Materializer
Steam Achievements will no longer trigger if use of console commands is detected during a game session.
Modding
When creating a new Pooled Mod Graphical Object Bank instance, the default sizes will now be 8 for Initial Size, 8 for Max Free Size and 1024 for Max Size.
In game sessions where Quantum Console is enabled, after it has been opened once, players will only be prompted with a help text pop-up once. This pop-up will not appear in future sessions.
Fixed an issue that caused the Quantum Console to open if a player using a gamepad clicked specific buttons.
Performance
[Switch 1] Changed some texture resolutions to improve memory usage.
Bug Fixes
Hovering Titan Breath's buff icon now displays the correct percentage.
Enemies that destroy tiles when they spawn can no longer destroy immune tiles.
Walls can now be placed on Explorer Proximity Sensor and Enemy Proximity Sensor.
Beds can now correctly be painted regardless of if the player is selecting the pillow or the sheets when attempting to paint.
The cookie called "Skip" can no longer be placed in Potion Pouches.
Pasting long texts in input boxes will now paste the part that fits instead of nothing.
Fixed an issue where it was not possible to navigate to a Sign's text field with a gamepad.
Fixed an issue where Nimruza spawned too many Cicada Nymphs.
Fixed an issue where Nimruza never healed up despite players being far away.
Fixed an issue where the key binding to toggle the shortcut window was not shown.
Fixed an issue where locked item slots remained locked when the item was dropped after the player died.
Fixed an issue where the Stone Lantern wouldn't emit any glow if painted with a Black Paint Brush.
Fixed an issue where the Wall Light Bulb couldn't be painted with a Teal Paint Brush.
Fixed an issue which made it possible to duplicate the Dynamite Pack and the Remote Explosive Pack.
Fixed an issue that caused the accumulated size of save files to cause a crash.
Improved the Cartography Table and fixed some issues related to it.
1.2.1.2 - Stability Patch
Gameplay
Circuits, conveyor belts, drills, doors, levers, turrets, and pressure plates now regenerate health over time, matching the behavior of other placeable objects.
Audio
Added a Master volume option.
Miscellaneous
Suppressed excessive log warnings about host not keeping up with the update frequency target.
Bug Fixes
Sprinklers now keep the ground watered even when no players are nearby.
Robot Arm filters now correctly apply when extracting items from Fishing Nets and Critter Catchers.
The version number in the top right corner is now correctly only shown while the Settings menu is open.
Holding the use button to open seasonal items (such as Winter Presents or Red Envelopes) in quick succession now works correctly once again.
Fixed Beds sometimes not properly being unclaimed when a player left the game.
Fixed minions and pets being teleported back to the player when near Cocoons.
Fixed an exploit where the Titan Breath could be fired infinitely without consuming mana by holding both attack buttons simultaneously.
Fixed an issue where players could still move while being forced to sleep.
Fixed an issue that caused the Desert Guardian Pants to not be included in the Desert of Beginnings fishing loot.
Fixed entities that heal nearby allies sometimes failing to heal all valid targets within range.
Fixed an issue in Creative worlds where God Mode could not be toggled on.
Fixed a bug where the final outro would not play if the world was in Guest mode with at least one non-admin player.
Fixed an issue that would cause some inventory animations to play twice, item pickup animations to not play at all, and UI actions to feel unresponsive.
Fixed inconsistent PvP hit detection.
[Xbox Series] Fixed a shader issue causing The Shimmering Frontier biome to look very bland.
1.2.1.0 - Minor Update
Gameplay
Added the ability to label chests.
Introduced a new Casual character type that:
Keeps inventory after death;
Has a reduced hunger drain;
Has larger parry windows;
Has shorter healing and mana potion cooldowns.
Added Potion Pouch and Critter Pouch to provide dedicated storage for critters and potions.
Meadow Milk can now be cooked.
The Locked Solarite Chest can now be found in the waters of the Shimmering Frontier.
Biome-specific terrariums and aquariums are now paintable.
Planter Boxes and Decorative Pots are now paintable.
Crafting tooltips now display the total number of materials available in nearby chests, combined with what is in the player’s inventory.
Graphics
Updated the icon shown when chest and sign label visibility is toggled off.
Updated the loot sprites for the boss scanners.
Modding
QuantumConsole is now accessible to mod developers and can be switched on by setting MenuManager.enableConsole to true. It can then be opened in-game via CTRL + X.
All Graphical Prefabs which have a component that inherits from IPoolable will now automatically be pooled. In order to adjust the size of pooling or to disable it, modders may create a PooledModGraphicalObjectBank ScriptableObject via the Create menu.
The mouse cursor has been upgraded to use a SpriteAsset, which can now be modded via ScriptableData Editor Window.
CraftingAuthoring now uses a ModdedObjectID string when ObjectID is set to ObjectID.None, which will be converted to an ObjectID during runtime. Modders may use this change to add modded items to workbenches and similar items.
Miscellaneous
The name and save icon of an existing world can now be changed in its world settings screen.
Added some new scenes to already existing biomes.
The scene that contained the Ruins Arc stone slate can once again naturally spawn in the world.
Organized the items in Creative Mode by splitting up categories and moving them into more appropriate locations.
Updated some of the icons and names of categories in the Creative mode UI.
Added descriptions to some large destructible objects.
Improved clarity of the titles in the Ancient Hologram Pod.
Updated some of the Core's dialogues to better explain the next tasks for the player.
Improved the names and descriptions of certain items, to better follow conventions and improve clarity.
Improved texts and fixed some localization issues.
It is now possible to copy a world's seed with a single click in the world settings screen.
Bug Fixes
The Metal Industrial Box and the Reinforced Industrial Box no longer erroneously render in front of Wall Light Bulbs.
Critters no longer clip through walls behind them.
The Abiotic Factor scene now correctly shows any hoed ground as Stone hoed ground (it will no longer show hoed Turf ground on top of Stone ground). This fix will only be applied to worlds where this scene was not generated prior to the fix.
The Scrap Minigun can no longer be charged up when at 0 durability.
The Pajama armor set now ensures the player has had the set's buff applied for 3 seconds before making the player sleep, rather than only accounting for how long the player has been still regardless of them wearing the set or not.
Items no longer lose durability while the player is in God mode in a Creative world.
Putting pouches into non-consecutive slots no longer makes it impossible to navigate between them when using a gamepad.
Holding an item and closing the inventory while using a gamepad no longer results in a noticeable delay before the character can move again.
Fixed an issue where bosses sometimes failed to drop their loot if the player died or left the area during the boss' death animation.
Fixed a bug where bridges would sometimes be invisible after wall blocks placed on top of them were broken.
Fixed a bug where inventory slots added by pouches would sometimes not show the background icon indicating which item type can be placed there.
Fixed some rare game crashes during the Urschleim boss fight.
Fixed an issue where shockwave attacks from enemies and bosses were not correctly blocked by blocks that were in line of sight.
Fixed an issue where Flamethrower Turrets would fail to damage nearby enemies when the player was too far away.
Fixed an issue where identical combat text from multiple sources in the same frame would only display once.
Fixed an issue where PvP teams would sometimes show the wrong color after toggling PvP on and off.
Fixed an issue where items would sometimes fail to be automatically pulled toward the player when standing near walls.
Fixed an issue where some visual effects would not play in the final boss' second phase.
1.2.0.7 - Stability Patch
Bug Fixes
Fixed an issue where the player inventory could be reverted to a previous state when connecting to a world whose save file had been copied from another save slot or machine.
Fixed a bug where save files could become corrupted if a crash happened with bad timing during an auto-save.
1.2.0.6 - Stability Patch
Miscellaneous
Chests with emissive textures now glow in the dark.
The Large Quarry Timber's position when placed on the ground now correctly matches its visual placement indicator, and the item now shows a rotated sprite when facing upwards.
Improved Urschleim's stability to prevent crashes in certain circumstances.
Improved the way Primeval Slime Cells are used, in order to avoid consuming multiple of them at once.
Improved texts and fixed some localization issues.
Bug Fixes
Fixed an issue where copying a world from one server or host to another might lead to characters having their inventory and other character data reverted when joining the world.
The Dresser's shadow now correctly rotates with the Dresser.
Stone Tiles from the Forlorn Metropolis sub-biome now correctly match their inventory loot sprites when placed on the ground.
Folding Screens can now correctly be rotated.
Mana Potions now have a separate cooldown and no longer share one with other consumables.
Fixed an issue where some Linux systems experienced several minutes of stalling during game startup.
Fixed a scenario where the game would crash when saving large worlds and maps.
Current Release
Build 25825408
Uploaded Oct 12, 2026
System Requirements
How to Install
CoreKeeper.exe to play
Troubleshooting tips
• Run Redist/_CommonRedist installers if game won't start
• Add folder to Windows Defender exclusions
• Run as administrator
Download
Direct link available
Needed when extracting (WinRAR / 7-Zip) — not a site login.
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Download Core Keeper for PC with a direct link or via torrent. Get the full version of Core Keeper for free. Core Keeper is a Action released by Pugstorm.