Core Keeper — patch notes and updates
Stored observation / content update:
Dated developer announcements recorded from Steam. Open the source for the complete update.
| Update | Date | Excerpt / source |
|---|---|---|
| CK 1.3.0.6 - Hotfix | 2026-10-09 | CK 1.3.0.6 - Hotfix Bug Fixes Fixed an issue that would prevent Steam Free Weekend players from entering a world. |
| Core Keeper’s Free Weekend – Your Adventure Starts Here! | 2026-10-08 | Grab your pickaxes and get ready for a Free Weekend filled with exploration, base building, boss battles, farming, fishing, magic, and secrets to uncover! Howdy, new Explorers, and welcome to the underground. We’re so excited for you to experience Core Keeper in our very first Steam Free Weekend since we launched in 1.0! What’s that? This is your first Free Weekend? Fear not! We’re here to tell you everything you need to know to get started on your adventure. What Is a Steam Free Weekend? From Thursday the 8th to Monday the 12th of October, we’re giving you the chance to play Core Keeper for free! Unlike a demo, which is typically limited to |
| 1.3.0.5 - Stability Patch | 2026-10-07 | 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 |
| Community Wrap-Up - September 2026 | 2026-09-30 | Happy autumn, Explorers 🍂 We hope you're loving our latest update, Riders of the Underground! September has been a busy month for us, but we're so excited to be able to share all our hard work with you and we're very grateful for all the wonderful feedback you've been giving us. So, without further ado, let's get into this community update! Riders of the Underground Launch! Riders of the Underground launched on September 21st with a whole host of new features and content including rideable mounts, the Hookshot, improvements to magic and summoning, new pets, a new sub-biome and more ✨ We also updated the Explorer's Guide to reflect the new co |
| 1.3.0.4 - Hotfix | 2026-09-30 | 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 | 2026-09-29 | 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- |
| CK 1.3.0.2 - Hotfix | 2026-09-22 | 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. |
| Core Keeper’s 1.3 Update, Riders of the Underground, is LIVE! | 2026-09-21 | We’ve just reached the first stop on the Road to the Maw, which means it’s time to saddle up and head on out in Riders of the Underground! This major content update brings some exciting new features to the ancient and mysterious world of Core Keeper, including all-new ways to explore. Find out more about what to expect in 1.3 and learn more about our roadmap and upcoming content below! https://www.youtube.com/watch?v=0yxFuxcr6_U Riders of the Underground Features There are many different ways to explore in Core Keeper, whether you’re walking, riding in a minecart, sailing, driving, or even teleporting across the underground. As of right now, |
| 1.3.0.1 Major Update - Riders of the Underground | 2026-09-21 | 1.3.0.1 Major Update - Riders of the Underground Gameplay New sub-biome: Moss - Found in the Forgotten Ruins biome. New cattle: Orex - Found in the Moss sub-biome. All cattle can now be turned into mounts by using the following new items on them: Saddle Racing Saddle Minions now persist indefinitely instead of expiring. Introduced 2 new talents to the Summoning skill tree to reflect this behavior, which replaced 2 previous talents. The player can now also decide when to despawn minions. Introduced the ability to spawn the max amount of minions all at once, based on the available max amount of minions the character can spawn at the moment of t |
| Riders of the Underground – Core Keeper’s 1.3 Update is Coming September 21st | 2026-09-10 | Giddy up, Explorers 🤠 Core Keeper’s 1.3 Update, Riders of the Underground, is coming on September 21st! We’re so excited to be bringing you an update with a whole host of new features and content that you’ll be able to enjoy across all stages of your underground adventure. From all-new ways to traverse the underground on rideable mounts, to a new sub-biome and improvements to the Mage & Summoner play styles, we’re ready to share some (but not all!) of what you’ve got to look forward to. https://www.youtube.com/watch?v=J8O59ZxWA6c Rideable Mounts You asked for it, and we delivered! Introducing rideable mounts, a new and adorable way to travel |
| Community Update - August 2026 | 2026-08-31 | August has been a month of exciting announcements and teasers for Core Keeper, and we're so excited to recap all this fun activity for you, Explorers. Let's jump straight in with the big news... Road to the Maw Announcements! We just announced our next 3 major content updates! Find out about the Road to the Maw in our official announcement Steam post here. We want to make the Road to the Maw an unforgettable journey and we'll be sharing lots more information about these updates as they draw closer, but we couldn't resist sharing a couple of little teasers... We Just Celebrated The 2 Year Anniversary of Core Keeper 1.0 After an incredible two- |
| Notes From the Underground #007 | 2026-08-27 | There's always something new to discover in the underground and it looks like our wayward Explorer found the perfect test subject for their latest creation! 👀 A transcript of this journal entry has been provided below the image. Notes From the Underground #7 - Yee-Haw! Every time I think I’m familiar with a certain corner of the underground, it surprises me. A growing, living world, lost to the ages. And who’d have thought that one of its darker, more ruin-filled corners would contain undiscovered patches of greenery? Truly remarkable. I must admit I was nervous when I encountered some of this area’s fauna, but they turned out to be a lot mo |
| Core Keeper 2026 Roadmap: Road to the Maw! | 2026-08-13 | Introducing “Road to the Maw” – our next 3 major content updates for Core Keeper! We’re so very excited to share our plans with you in more detail below, and you’ll find an overview in the roadmap image in this post (it’s also visible on our Steam store page!). What is the Road to the Maw? The Road to the Maw consists of 3 interconnected major content updates! Originally, we planned for this to be one single update that we would work on for a longer period of time – Core Keeper’s crowning glory – but as development began, we realised that building up to one release would mean that players would have to wait much longer before getting to exper |
| Community Update - July 2026 | 2026-07-31 | Hey Explorers, we hope you're having an awesome summer. We don't know about you, but here in the Northern Hemisphere, it has been incredibly warm and bright. You might be aware that in Sweden, it's customary for us to take some vacation time over the summer, and this is something we do as a business to ensure we're rested and reinvigorated for the remainder of the year. We've been spending some time away from our desks these past few weeks, but that doesn't mean we don't have time for a little community wrap up! What're Your Favourite Scenes? Scenes are unique pockets of the world that generate all over the map in Core Keeper. They can come i |
| Community Update - June 2026 | 2026-06-30 | Hi Explorers! It's shaping up to be a scorcher of a summer here in the Northern Hemisphere. It's so hot, it's making the Desert of Beginnings look cool 🌞 We've got lots of fun community activity to share with you from the month of June, starting with a fun video that we hope some of our newer community members found useful! Resizing Tool Areas There are some Core Keeper tips and tricks that even veteran players might have missed. For instance, did you know that you can resize the area of equipment like shovels, hoes, and even the roofing tool? Check out our informative video here! Soundtrack Update! We updated our original soundtrack on Stea |
| 1.2.1.5 - Hotfix | 2026-06-08 | 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 | 2026-05-27 | 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! Fixed a crash caused by interacting with the S.A.H.A.B.A.R summoning console. |
| 1.2.1.3 - Stability Patch | 2026-05-20 | 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 Q |
| 1.2.1.2 - Stability Patch | 2026-05-07 | 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 t |
| 1.2.1.0 - Minor Update | 2026-05-06 | 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, |
| Core Keeper’s 1.2.1 Update Drops Tomorrow! | 2026-05-05 | Surprise! We’ve got a fun little content update coming your way now that you’ve had a chance to explore some of Breaker’s Reach and the new features added in our Void & Voltage Update! Tomorrow’s 1.2.1 Core Keeper update will include some fun gameplay updates, graphics improvements, bug fixes, and more. Players will be able to choose an all-new “Casual” character type that keeps its inventory after death, has a reduced hunger drain, boasts larger parry windows, and experiences shorter healing and mana potion cooldowns. Perfect for new players or those looking for a more relaxed gameplay experience. Character and world types cannot be changed |
| Community Update - April 2026! | 2026-04-30 | Howdy, Explorers! We hope you've had an awesome April. It's getting warmer here in the Northern Hemisphere and we're looking forward to a great summer. And, hey, if it's still pretty grey where you are, you can always spend some time in the Sunken Sea or Desert of Beginnings until the real sun comes out to play! Here's what's been going on in our community spaces this month... April Fool's What can we say? We're a bunch of practical jokers 😂 We released some silly, made-up patch notes for Core Keeper...and then moorowl over on Reddit actually brought one of them to life in the form of a tiny, squeaking Glurch! Screenshot Egg Hunt Did you man |
| Community Update - March 2026! | 2026-04-01 | Hey Explorers, we thought it was high time for another community update, especially now that you've had plenty of time to enjoy Void & Voltage. So, let's look back over the month of March and see what we've been up to...Explorer's Guide Launch!We launched a brand-new digital download for Core Keeper in the form of our Explorer's Guide. Perfect for beginners and returning Explorers looking for a hand-drawn guide to the underground. The Explorer's Guide features roughly 100 unique illustrations and is packed full of information, tips, tricks, lore, developer comments and more! Pick up your copy here!1.2.1 TeaserWe showed off a little teaser of |
| 1.2.0.7 - Stability Patch | 2026-04-01 | 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 | 2026-03-16 | 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 dat |
| Announcing Core Keeper’s Official Merch Store! | 2026-03-13 | We’re very excited to announce the launch of Core Keeper’s official merchandise store! We’ve had multiple requests for merchandise from the community over the years, and we’re now delighted to be able to show you everything we’ve been working on and that we’re super excited to share! Discord community members will spot that we brought a handful of the talented Owlunae’s emojis to life across multiple pieces of merchandise, and we even worked with our key artist, mamoriart, on our Azeos Comic Strip Sweater and Hoodie! Explorers can also get their hands on 9 collectible boss pins, Core Keeper hoodies and T-shirts featuring several iconic design |
| 1.2.0.5 - Stability Patch | 2026-03-06 | 1.2.0.5 - Stability Patch Gameplay Increased the maximum vibration intensity on controller. The Shredder now returns the full amount of Scrap Parts when dismantling items. The Giant Bug Brain no longer drops from Ra-Akar, and is no longer a crafting requirement for Wind Organ of Wilderness (Druidra's summoning item). Modding Added a feature to detect more startup issues which may be caused by mods. The game will now try to restart without mods if possible. Fixed an issue where mods marked with the Script (Elevated Access) tag weren't loading. Miscellaneous After a hydra boss has been killed in a world, their scanner and summoning item will no |
| Introducing Core Keeper’s Explorer’s Guide | 2026-03-05 | We’ve been working on something special, Explorers! We’re excited to reveal Core Keeper’s official Explorer’s Guide – a handy, digital guide for new and returning Explorers to get to grips with all things Core Keeper. Featuring over 100 hand-drawn illustrations, the Explorer’s Guide covers everything from the very start of your adventure all the way to late-game content and the more technical side of things (like dedicated servers). Within, you’ll find a wealth of information on the underground, as well as tips, tricks, lore, developer comments, community input, advice from our ambassadors, and more. Remember the days when boxed games used to |
| 1.2.0.4 - Hotfix | 2026-02-25 | 1.2.0.4 - Hotfix Bug Fixes Fixed an issue that caused texts in Korean to be garbled. |
| Core Keeper’s Void & Voltage Update Is LIVE! | 2026-02-25 | Are you ready to uncover the mechanical mysteries of Breaker’s Reach and venture into its Void sub-biome? Well, grab your most-powerful pickaxe, reinforce your armour, get ready for the next steps in your underground adventure – Core Keeper’s Void & Voltage update is here! https://www.youtube.com/watch?v=NpHu_WTdiRI All New Areas to Explore Breaker’s Reach is a brand-new biome situated in the outer regions of the underground. It’s unclear who or what founded this mechanical biome, filled with crab-like geobots and the remnants of advanced systems and machinery. There are plenty of secrets and treasures to be found here, but they are well-guar |