1.39.4|Apr 15, 2026
View on Steam↗Patch 1.39.4
2/5 Minor
Unlock the free Starseeker Expedition Suit and benefit from a major fix for legacy multiplayer rail network issues.
Key Changes
- 1Free Starseeker Expedition Suit available for a limited time by logging in
- 2Fixed a major legacy issue where large multiplayer rail networks would stop functioning
- 3Resolved multiple issues preventing Museum donation milestone rewards from being claimed
- 4Fixed a crash occurring when loading saves with out-of-bounds Terrain Anchors
- 5Added an On/Off toggle function to the Auto Fertilizer
- 6Fixed multiplayer desync issues with Biodome growth timers
- 7Added a 'Return' option to cancel Orbital Platform launches
- 8Fixed an issue where players could get stuck in shuttles during interplanetary travel
- 9Vehicle Drill slots are now output-only to prevent item slotting bugs
- 10Fixed PS5 controller vibration and audio not stopping after suffocation ends
All Changes
🎨Cosmetics(1)
- newStarseeker Expedition Suit: Added the Starseeker Expedition Suit, available to unlock by logging into the game for a limited time.
🏗️Megastructures(17)
- fixMegastructure: Fixed an issue where Megastructure holograms would rotate 90° from their Anchor holograms.
- removeMega-Deconstructor: Removed the Mega-Deconstructor from the Creative Catalog on Aeoluz.
- fixDLS: Fixed an issue where the DLS hologram would face away from the player.
- fixConstruction Anchor Landing Pad: Corrected the version of the Construction Anchor Landing Pad Hologram that appears during placement.
- removeDLS Anchor: Removed the DLS Anchor from the Research Catalog in Adventure Mode as it is not printable.
- fixLaunch Tube: Fixed a bug where the Launch Tube door would animate open when placing an Orbital Platform Package even if already open.
- fixOrbital Platform Construction Anchor: Fixed an issue where the Orbital Platform Construction Anchor was available before unlocking the 'Constellation Prize' mission.
- fixOrbital Platform: Resolved an issue where power plugs on the Orbital Platform would not extend when pulled.
- fixOrbital Platform: Fixed an issue causing the Backpack UI to display while selecting a planet for the Orbital Platform.
- fixOrbital Platform Construction Anchor: Fixed a bug allowing players to obtain more than one Orbital Platform Construction Anchor.
- fixOrbital Platform: Repositioned cable plugs incorrectly placed inside the MEGA-Mini Asteroid on the Orbital Platform.
- fixBiodome: Fixed multiplayer timer tooltip desync for growing seeds in the Biodome.
- fixBiodome: Fixed a bug that removed the plant growth timer in the Biodome after saving and reloading.
- fixAuto-Harvester: Fixed an issue where the Auto-Harvester failed to harvest seeds in specific Biodome Expansion module slots.
- fixBiodome: Fixed a problem where the seed countdown would reset to its original timing after reaching zero.
- fixBiodome: Fixed an issue where non-Mega-plants could clip through the Biodome roof.
- fixSpine Lily Seeds: Resolved a problem preventing Spine Lily Seeds from being placed into Medium-Resource Canisters.
🏛️Museum(11)
- fixMuseum: Fixed interaction issues with control panels and donation buttons when using controller automatic targeting.
- fixMuseum: Fixed multiple issues preventing players from claiming donation milestone rewards.
- fixMuseum: Fixed Collection Perk effects not scaling correctly with duplicate collections.
- fixDisplay Case Platform: Fixed power plugs remaining attached to the Display Case Platform beyond typical cable length.
- fixMuseum: Resolved an issue where the Milestone 3 Donation perk failed to increase Backpack power capacity.
- fixMuseum: Fixed the Backpack power capacity perk remaining active when the Museum had insufficient power.
- fixMuseum: Fixed the Backpack power capacity perk becoming inactive after saving and reloading.
- fixMuseum: Fixed oxygen capacity perk flickering for multiplayer clients when at halfway capacity.
- fixMuseum: Resolved an issue where players were prompted to claim already-claimed Museum rewards.
- fixDonation Drive Mission: Fixed the final objective in the Donation Drive Mission incorrectly showing as completed.
- fixDisplay Case: Fixed packaged Display Cases appearing smaller in the hologram than their actual size.
🎮Gameplay(13)
- fixRail Network: Fixed a legacy issue where large rail networks in multiplayer would stop functioning after reaching a certain connection limit.
- buffAuto Fertilizer: Added an On/Off function to the Auto Fertilizer.
- changeOrbital Platform: Added a 'Return' option when launching the Orbital Platform to cancel and exit the planet selector.
- changeConstruction Anchor Landing Pad: Added a secondary action to the Construction Anchor Landing Pad tooltip to recall loaded Anchors.
- changeVehicle Drill: Changed Vehicle Drill slots to be output-only to prevent issues when slotting small items.
- fixShuttle: Fixed an issue where players could get stuck inside their shuttle during interplanetary travel in multiplayer.
- fixWalkway: Fixed collision remaining in place after a Walkway is stowed or removed on servers/multiplayer.
- removeWalkway: Removed collision from Walkway holograms during placement.
- fixWalkway: Fixed an issue preventing players from walking on redeployed Walkways if the middle post was removed.
- fixWalkway: Fixed an issue where Walkways could not be redeployed if the middle post was moved out of range.
- fixTether Dropper: Fixed an issue where the Tether Dropper would not draw power.
- fixRailway: Fixed a bug where removing a middle Rail post between two connected posts prevented Railway redeployment.
- fixMini Shuttle: Fixed Creative Mode Mini Shuttle having unlimited fuel even when the option was disabled.
⚙️Performance & Stability(3)
- fixTerrain Anchor: Fixed a crash occurring when loading a save containing out-of-bounds Terrain Anchors.
- fixMegastructure Component Printer: Fixed a crash on loading if canisters were attached to a Megastructure Component Printer.
- fixPS5 Controller: Fixed an issue on PS5 where suffocation vibration and audio would not stop upon reconnecting to oxygen.
📱UI/UX(6)
- changeMegatech: Added tooltip subtitles for several Megatech items.
- fixVesania: Fixed an issue where landing zones might not appear on Vesania for Switch players.
- fixSimulated Aquarium: Restored the Simulated Aquarium to the Research Catalog in Adventure Mode.
- removeAstropedia: Removed the term 'DLC' from the Glitchwalkers Astropedia for consistency.
- fixUI: Fixed an issue where Xbox PC players incorrectly displayed PlayStation icons on Dedicated Servers.
- fixCustom Game Config: Fixed an issue where base game and Glitchwalkers custom game configs were shown in the wrong modes.
Summary
The April update for Astroneer focuses heavily on stability and bug fixes across the Megatech systems, including the Museum, Biodome, and Orbital Platforms. A significant highlight is the resolution of a long-standing legacy issue where large rail networks would fail in multiplayer sessions. Additionally, players can now claim a free Starseeker Expedition Suit to celebrate the upcoming Starseeker: Astroneer Expeditions. Note: This update is not backwards compatible; saves from v1.39.4 will not work on older versions.