Core Keeper 1.3.0.3 Patch Notes Fix Boss-Deleted Mounts and Expand Modding Support

Core Keeper version 1.3.0.3 focuses on stability while fixing several frustrating gameplay problems, including mounts disappearing permanently after boss attacks. The patch also improves Void Caveling figurine drop rates, expands modding support, and cleans up issues across PC, Linux, Steam Deck, PlayStation 4, and PlayStation 5, according to the official Steam patch notes.

Mod creators receive the largest technical batch of changes, including a higher ghost component cap, PugText preview support in the ModSDK, and a new event for adding components before entity conversion. The player-facing fixes cover everything from map controls and vehicle behavior to combat effects, pets, building, world loading, and platform-specific crashes.

Core Keeper 1.3.0.3 Patch Notes

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.
• [PC] Fixed an issue where text in Thai would render incorrectly.
• [Linux] 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.

Which fix will make the biggest difference in your Core Keeper world? Follow us on X, Bluesky, YouTube, Instagram, Steam, and Telegram.