2.0.66|Sep 5, 2025
View on Steam↗Version 2.0.66 released as stable
3/5 Moderate
Factorio 2.0.66 delivers a massive stability update with over 15 crash fixes and a significant expansion of the Lua API for modders, alongside critical fixes for boilers and space platform logistics.
Key Changes
- 1Fixed over 15 distinct crashes related to cloning, blueprints, and belt mechanics.
- 2Boilers now correctly produce steam when consuming hot input fluid.
- 3Space platform construction requests now properly request more repair packs.
- 4Added Demolisher and Territory APIs for modders.
- 5Graphics: 'Render in native screen resolution' no longer requires a game restart.
- 6Blueprint setup GUI now includes an icon picker in the description field.
- 7Fixed loaders getting stuck when taking from asteroid collectors on blocked belts.
- 8Added new events for Agricultural Towers (planting and mining seeds/plants).
- 9Fixed train stop priority clamping issues in blueprints.
- 10Expanded LuaEntity and LuaControl APIs with numerous new read/write properties.
All Changes
🛡️Stability & Performance(17)
- fixEditor: Fixed a crash if a player using the editor equips an equipment with a burner component.
- fixUnderground belts: Fixed a crash related to underground belts when super force building.
- fixTurrets: Fixed a crash when a beam attack trigger destroys the turret firing it.
- fixItem request proxies: Fixed a crash when a mod puts item request proxies into the player undo queue.
- fixFluidbox: Fixed a crash when attempting to render a linked fluidbox connection.
- fixResearch: Fixed a crash when changing research state during the configuration changed event.
- fixTrains: Fixed a crash when cloning moving trains in some situations.
- fixFurnace: Fixed a crash when furnace that is crafting is cloned.
- fixInserter: Fixed a crash when inserter tries to insert item into a furnace which is currently crafting a recipe with no item ingredients.
- fixFurnace: Fixed a crash when loading a save file with furnaces that are crafting a recipe with custom fluidbox indexes set.
- fixAlerts GUI: Fixed a crash when pressing end, home, page up or page down key while the alerts GUI was focused.
- fixMultiplayer: Fixed a crash when rendering latency players in some cases.
- fixBlueprints: Fixed a crash when saving after parametrising a blueprint that caused filters to merge in some cases.
- fixNetworking: Fixed a crash when using send_udp fails.
- fixReplays: Fixed a crash with running replay headless when game wants to show notifications.
- fixSimulations: Fixed crash if a simulation gets paused.
- newGame Client: Windows executables now undergo code signing.
⚙️Gameplay Systems(16)
- fixBoilers: Fixed boilers consuming hot input fluid would not produce enough steam.
- fixAsteroid collectors: Fixed loaders could get stuck when taking from asteroid collectors when one lane of a belt was blocked.
- fixSpace platform: Fixed that space platform construction requests would not request more repair packs after running out.
- fixBelts: Fixed a consistency issue when rotated entities are moved by belts.
- fixBiter spawners: Fixed captive biter spawners would not get damaged while not producing if friendly fire was disabled.
- fixDeconstruction planner: Fixed that deconstruction planner was ignoring quality of items on ground.
- fixBelts: Fixed that drag building with smart belt building disabled would remove belts in some cases.
- fixUnderground belts: Fixed that freezing and thawing underground belts would move items slightly.
- fixFurnace: Fixed that furnaces could keep using a recipe they should not be able to use after a migration.
- fixFurnace: Fixed that furnaces were not considering recipe with no ingredients as not craftable.
- fixInserters: Fixed that inserters could get stuck inserting items into rogue spawners when picking from belts.
- fixQuality: Fixed that migrating entities with quality would not preserve the quality.
- fixRoboport: Fixed that reading roboport logistic requests in networks with buffer chests did not behave correctly.
- fixEnergy buffer: Fixed that several entity types would not account for drain in their energy buffer.
- fixSpidertron: Fixed that spidertrons built from script did not default to request-from-buffers.
- newHeat interface: Heat interface can now heat entities and tiles.
🚂Logistics & Trains(4)
- fixTrain stops: Fixed train stops with priority above 90 would get priority clamped to 90 inside of a blueprint.
- fixTrain fuel GUI: Fixed that inventory filters were ignored when in the train fuel GUI.
- fixTrains: Fixed train route highlighting didn't work when riding in non-locomotives.
- fixRockets: Fixed that cloning rockets with attached cargo pods did not work correctly.
🖥️UI & UX(9)
- changeBlueprint setup GUI: Changed the blueprint setup GUI description field to include the icon picker.
- changeDisplay panel: Improved the GUI responsiveness in the display panel.
- fixTechnology GUI: Fixed on-screen-keyboard opening on top of the search field in the technology GUI.
- fixBlueprint setup GUI: Fixed that switching between normal and remote view would close the blueprint setup GUI.
- fixRemote view: Fixed that the remote view minimap always focused on the physical player position when in remote view.
- fixControl settings: Fixed that resetting control settings wouldn't update control tooltips.
- fixManage mods GUI: Fixed that the home key did not work in the manage mods GUI.
- changeGamepad: Don't change gamepad selection center when the character starts flying in mech armor.
- fixMinimap: Fixed minimap bobbing up and down when the character is in mech armor.
🎨Graphics & Visuals(11)
- changeGraphics settings: Changed 'Render in native screen resolution' graphics setting to no longer require a game restart.
- fixMetal graphics backend: Fixed that playing in fullscreen with the Metal graphics backend could look blurry if 'Render in native screen resolution' was off.
- fixPumpjack: Fixed frozen pumpjack could not match frozen sprite.
- fixPentapod: Fixed pentapod leg mount positions when the body is rotated.
- fixPentapod: Fixed pentapod orientations getting incorrectly warped.
- fixSpidertron: Fixed spider unit graphic layers with 'apply_runtime_tint' would not use the force color.
- fixStomper: Fixed stomper corpses graphics.
- fixBelts: Fixed that belts in the blueprint GUI did not animate.
- fixMap: Fixed that overlapping tile ghosts would not draw on the map.
- fixFluid box: Fixed that some entities did not draw fluid box connection pipes.
- fixSelector combinator: Fixed selector combinator wire connector shadow position.
📜Modding & Scripting(13)
- newModding API: Added demolisher and territory API.
- newAgricultural tower: Added agricultural tower events: on_tower_planted_seed, on_tower_pre_mined_plant, and on_tower_mined_plant.
- newSpiderVehicles: Added ability for SpiderVehicles to rotate their legs like pentapods when provided with a base sprite with rotation frames.
- newLuaPlayer: Added LuaPlayer::set_zoom_limits() to set zoom limits for any controller type.
- newLuaEntity: Added LuaEntity::apply_upgrade() method.
- newLuaPlanet: Added LuaPlanet::get_space_platforms() method.
- changeModding API: Changed LuaAchievementPrototype::to_kill and module to return arrays of LuaPrototypes instead of strings.
- newHeat energy sources: Heat energy sources now support pollution.
- newLuaControl: Added LuaControl properties for flight_height, is_flying, and render_position.
- newLuaEntity: Added LuaEntity properties for created_by_corpse, heat_neighbours, priority_targets, and pumped_last_tick.
- newScripting: Added LuaEntity::register_tree() and LuaSurface::register_plant().
- newLuaForce: Added LuaForce::get_chunk_chart(surface, position).
- newScripting: Added blueprint_description read/write to LuaItemCommon and LuaRecord.
Summary
This stable release focuses heavily on technical refinement and modding capabilities following the Space Age expansion. It addresses a wide array of crashes related to blueprinting, cloning, and belt mechanics. Key gameplay fixes include correcting boiler steam production and ensuring space platforms properly request repair packs. Modders receive a wealth of new tools, including expanded access to Demolisher and Agricultural Tower logic, as well as more flexible UI and rendering controls.