KSP2 Redux 0.2.3.0.101965

Redux Beta 5 Hotfix 1

To install, use the Redux Updater app, do not download any files from this page manually.

Fixes

• Fixed CJK localization breaking the UI
• Fixed Color Manager presets reverting (for real this time)
• Fixed disabling Cadet Orientation breaking mission completion
• Fixed not being able to destroy flags
• Fixed tier 2 unlock animation playing twice

Features

• Added three new missions
• Added setting for photosensitivity toggle
• Made splash screen skip in the SDK
• Debug Tools now always stays on top of other windows

Other

• New launcher version, please update in app

Redux Beta 5

v0.2.3.0.101933-beta (2026-04-25)

Fifth public beta release of KSP2 Redux.
To install, use the Redux Updater app, do not download any files from this page manually.

New Content

Features

• Added: Custom flags (place image files in KSP2Redux/mods/<YourModName>/flags and restart game)
• Added: Discord Rich Presence support
• Added: Statistics window in the main menu and Esc menu

Parts

• Added: SM+ "Cheetah" orbital engine
• Added: SM+ "Bobcat" launcher/sustainer engine
• Added: 3 SM+ adapters
• Added: 4 SM+ fuel tanks

Science

• Added: 2 new tech nodes in the tech tree

Modding Support

• Upgraded to Unity 6000.4.1
• Modding SDK now works with KSP2 Redux (beta 5+ only)
• Added "Project Shakespeare", a KSP1 parts mod → KSP2 parts mod converter - EXPERIMENTAL, no support provided for specific KSP1 mods
• Added Event and Command bindings to UITK for buttons
• Added sound manipulators to UITK
• Added localization converters for UITK MVVM bindings

Other

• New Updater application is now used to install, update/downgrade and uninstall KSP2 Redux
• Added Discord Rich Presence support
• Added a new Statistics window in the main menu and Esc menu

Bug Fixes & QoL Improvements

Construction

• Fixed: Struts disconnect when undoing
• Fixed: Struts in symmetry act get cross-wired when placed on rotated parts

Environments

• Fixed: Mission control shader made displays look grey

EVA

• Fixed: Fix that was supposed to fix being able to plant flags on spacecraft that are not on ground

Flight and Map

• Updated: Increased SAS Stability
• Updated: KSP1-style input smoothing for both normal and precision mode
• Fixed: Telemetry wasn't up to date in SAS FixedUpdate
• Fixed: Map UI breaks when a targeted vessel gets destroyed
• Fixed: TelemetryComponent NREs upon destruction of a targeted vessel
• Fixed: Orbital line in other SOIs no longer ignore axialTilt, which means more accurate orbital lines.

FX and Audio

• Updated: Countdown now plays if loaded from save now
• Fixed: Countdown timing was slightly off
• Fixed: FXBase NREs when teleporting

Tutorials and Missions

• Fixed: "This Is Very Normal" mission completes when not in orbit
• Fixed: Final "I. P.A.I.G.E" mission being impossible
• Fixed: Final "I. P.A.I.G.E" objective text being wrong
• Fixed: Gateway missions completing without having actually completed the objectives

UI/UX

• Updated Flag Site UI style
• Updated SW console UI
• Fixed: SW console not showing any logs
• Fixed: Flag Site UI description and location name had text limits
• Fixed: Heating bars and Parts Picker don't get hidden when pressing F2
• Fixed: Color manager presets get deleted on revert
• Fixed: CommNet tooltip NRE upon hovering over it when there's no active vessel
• Fixed: UITK loading flow background is stretched on ultrawide monitors
• Fixed: Parallax effect on tech nodes on ultrawide monitors
• Fixed: Campaign folder would get deleted if it was empty

Other

• Updated Shapes package to 4.5.1
• Removed Herobrine

Performance

• Reduce string overhead in Module_RCS when thruster status text is not visible.
• Refactor RelativeOrbitSolver to avoid allocating TransformModels (Lots, and lots of profiling the map view. Eventually we got it down though, probably.)
• Enabled DirectStorage

Mod Breaking Changes

• Custom UITK elements made with UxmlFactory are no longer supported in Unity 6.4. Please upgrade to [UxmlElement] attribute-based custom elements. More info in the Unity documentation.

Known Issues

• The new SM+ engines' gimbal animation is not final
• The SM+ parts have no reentry VFX yet
• Balancing for SM+ parts is not final
• "Project Shakespeare" KSP1 mod loader is in an extremely early, experimental state. It is meant as a preview for our future comprehensive editor tooling for helping KSP1 modders port their parts to KSP2 Redux.

Redux Public Beta 4 Hotfix 1

v0.2.3.0-beta+db95dc1d (2026-02-28)

Hotfix for the fourth public beta release of KSP2 Redux.

Bug Fixes

Construction

• Fixed: VAB lighting/part colors being darker than normal

Flight and Map

• Fixed: EVA helmet lights not working properly
• Fixed: Right Alt key not triggering physics warp in space

Modding Support

• Fixed: Patch Manager parsing errors not increasing the error counter on the loading screen

UI/UX

• Fixed: Chinese, Japanese and Korean fonts not rendering all characters properly
• Fixed: UI scrolling is too fast in some places

Redux Public Beta 4

v0.2.3.0-beta+27d5a5ff (2026-02-27)

Fourth public beta release of KSP2 Redux.

New Content

FX and Audio

• Reimplemented countdown audio

Tutorials and Missions

• Added: "I., P.A.I.G.E" series of missions
• Added: "This Is Very Normal" mission

Modding Support

• Upgraded Unity version from 2022.3.5f1 to 6000.3.10f1
• Added: RevealObjectiveOnActivate in missions
• Updated: Loading tips have their own addressable label
• Fixed: Mod localizations unable to override stock localizations
• Updated: OAB now uses copies of prefabs to instantiate parts, preventing issues with prefab files being modified at runtime in the editor

Bug Fixes & QoL Improvements

Construction

• Added: Color Manager saves apply mode and presets pane state
• Fixed: VAB Camera unexpectedly resets to manually panned position when in airplane mode
• Fixed: Fairings do not get created when loading a vessel in for the first time
• Fixed: Color Manager eyedropper tool setting both colors instead of just the selected one

EVA

• Updated: Disabled EVA exit obstruction check
• Fixed: Surface Sample container not being in the kerbal's hands

Flight and Map

• Added: Physics Warp initiation in space with the Alt key
• Added: 10,000,000x warp is now available
• Updated: Decoupled parts get renamed to Debris: OriginalVesselName
• Updated: Undocked parts get renamed to Undocked: OriginalVesselName
• Updated: Docked parts get renamed to Docked: OriginalVesselName
• Fixed: Partially out of fuel event triggers if infinite fuel is enabled
• Fixed: Single part SAS oscillation issues
• Fixed: Maneuver trajectories visually disappear when loading the game

UI/UX

• Added: New notifications for time warp height limits and warping to point
• Added: Radiator Action Group button in vessel actions
• Added: New UITK loading screen
• Updated: Flags are destructible from tracking station
• Updated: Focus button on flags in tracking station object picker
• Removed: Map object tooltip pinning
• Fixed: Size tag in R&D Center nodes is hard to read
• Fixed: Part Subtitle displaying outside of the part info window if text is too long
• Fixed: Throttle text size being too large in some languages
• Fixed: Agency flag doesn't get set in the escape menu
• Fixed: Changing language while in game localizes the escape menu once
• Fixed: UI Data in tracking station is incorrect for miscellaneous objects
• Fixed: VAB part info size categories are not legible

Science

• Added: Kerbals on EVA can take science reports out of command pods and probes

Other

• Updated: Unified logging, all logs are in Ksp2.log
• Fixed: Typos in various areas

Performance

• Moved a few view layer things to Module_Engine
• Avoid unnecessary parent change overhead when instantiating save UI
• Fix unnecessary layout group overhead caused by SetSiblingIndex() in the save UI
• Fixed Color Picker GameObject duplicating

Known Issues

• Lighting in the Mission Control building is a bit off
• Languages with unfinished translations are visible in the Settings menu

Redux Public Beta 3 Hotfix 1

v0.2.3.0-beta+727ccf96 (2025-12-24)

Hotfix for the third public beta release of KSP2 Redux.

Bug Fixes

Flight and Map

• Fixed: Camera not resetting properly when focusing on a part and opening KSC
• Fixed: Maneuver nodes not being movable in the map view

Other

• Fixed: Bug report titles have incorrect formatting

Redux Public Beta 3

v0.2.3.0-beta+61072e84 (2025-12-24)

Third public beta release of KSP2 Redux.

New Content

EVA

• Added: Kerbals now have helmet lights that can be toggled on/off

Flight and Map

• Added: Camera FoV adjustment in flight (Alt + Mouse Wheel)
• Added: Focusing camera on a part in flight (Double Click)
• Added: Keybind to reset camera state in flight (Double Middle Click)

Parts:

• Updated: TCS-400X & TCS-200F radiators now have reentry VFX

Improvements

Flight and Map

• Updated: Flags can now be deleted in the map view and have a more distinct color

Modding

• Updated: Revamped the KerbalUI theme to better match planned stock UI styles
• Updated: Stock code that checks for UI under the cursor now accounts for modded UI as well
• Updated: Removed deprecated exposed controls from the UI Toolkit experimental namespace

UI/UX

• Added: Redux will now display a notification on the Mods menu when a new version is available
• Updated: Hovering over parts with the UI hidden no longer shows an outline
• Updated: Applied new UI styles to Bug Reporter and Mods menu
• Updated: New and updated localizations for both stock and Redux UI

Other

• Updated: Submitted bug reports now include the current game version and proper filenames

Bug Fixes

Flight and Map

• Fixed: Loading screen hanging when switching to tracking station
• Fixed: Multiple decoupling/undocking errors when vessels are recreated
• Fixed: Errors when a vessel gets destroyed
• Fixed: Maneuver nodes breaking after loading a save

Modding

• Fixed: Patch Manager patch configs not getting cached properly
• Fixed: Patch Manager patches with a sole selector causing errors
• Fixed: Runtime changes to part prefabs carrying over to prefab files on disk in the Editor

Parts

• Fixed: Engines with multiple nozzles causing overheating issues
• Fixed: Deployable radiator getting stuck in the Moving state
• Fixed: Fairings only shielding a limited number of parts from the airstream

Science

• Fixed: Science experiments not being transmittable through relays

UI/UX

• Fixed: Navball not resetting back to Surface mode after reverting to launch
• Fixed: Vertical speed readout incorrect scale
• Fixed: Science rewards UI not showing values higher than 4 digits
• Fixed: Scrolling over Redux and mod windows triggering zooming in/out in the game
• Fixed: Mods menu button for opening mod settings not working
• Fixed: Mission descriptions not properly rendering rich text tags
• Fixed: Intersect markers not being visible without an active maneuver in the Map View

VAB

• Fixed: Keybinds for switching tools (1-4) not working on non-US keyboard layouts
• Fixed: Deployable parts not having correct animation state in symmetry mode when extended

Other

• Fixed: Science experiments causing errors on game load

Redux Public Beta 2

v0.2.3.0-beta+c5f75e51 (2025-12-06)

Second public beta release of KSP2 Redux.

New Content

Installing and Updating

• Added: Redux support for the Epic Games Store version of KSP2

UI/UX

• Added: API for mouse-click sort ordering of UITK and UGUI windows
• Added: Bug Reporter dialog now asks whether the reported bug is from Redux or the base game
• Updated: Bug Reporter UI reworked to better match stock style

Bug Fixes & QoL Improvements

Construction

• Updated: Fairings no longer check for clipping when being built in the VAB

Modding

• Fixed: Mods using a publicized version of KSP2 Redux not running in the editor
• Fixed: Configuration value callbacks firing before new value is set

Flight and Map

• Updated: Deployable parts no longer get blocked when extending
• Fixed: Planting flags in invalid locations

Tech tree

• Fixed: Empty ISRU tech node showing up in the tech tree

Tutorials and Missions

• Fixed: "To A Moon And Back", "To Boldly Go" and "Not Because It Is Easy..." missions not completing under certain conditions
• Fixed: "To A Moon And Back" mission now unlocked after first Kerbin orbit

UI/UX

• Fixed: Atmospheric pressure in the tracking station always showing 1 atm
• Fixed: Audio settings sliders always displaying 100% when first opening the settings menu
• Fixed: "Report Redux Bug" button in the escape menu moving version info offscreen in Exploration mode
• Fixed: Certain parts of SpaceWarp UI not hiding after pressing F2
• Fixed: Missions in Mission Control clickable after collapsing their category
• Fixed: Redux bar toggles not fully matching the stock version
• Fixed: Redux and mod scrollbars visual glitches
• Fixed: Multiline text fields broken in draggable UITK windows
• Fixed: Positioning logic of UITK windows causing them to spawn offscreen

Redux Public Beta 1

v0.2.3.0-beta+9fe7d552 (2025-12-01)

First public beta release of KSP2 Redux.

Bug Fixes & QoL Improvements

UI/UX

• Fixed: Scaling/positioning issues on non-16:9 aspect ratios (ultrawide, 3:2, etc.)
• Fixed: No hover sound in the Settings menu
• Fixed: Resolution showing up as "Spanish" in the graphics settings for non-standard resolutions
• Fixed: Various UI issues in the bug report dialog
• Fixed: UI bug in the Redux Credits screen
• Updated: Warning dialog about possible mod incompatibilities

Other

• Updated: Game logs are now automatically attached to bug reports

---

The patch also includes all the following content from the initial private beta release v0.2.3.0-beta+36b1a6fa of KSP2 Redux (2025-11-29):

New Content

Parts

• Added: TCS-400X & TCS-200F Radiators

Graphics

• Added: Sun flare changes color on sunset/sunrise
• Added: Reentry effects are a different color for each planet
• Added: Cloud layers, and improved stock cloud shapes

Tools

• Added: Debug Tools for various systems, accessible using Alt+F12 (can be changed in the settings)
• Added: Bug Report UI. Accessible via the escape menu or by pressing Ctrl+B

Tutorials and Missions

• Added: New Mission Granters: Mega Mining Co, Shallow Stone, Perpetu-Warm, Kerbal Fossil Appreciation Fan Club, Urika Inc.
• Added: Mission Granter Logos in Mission Control
• Added: Tier 1, 2 and 3 gateway missions

Modding Support

• SpaceWarp, PatchManager, V-Swift, Shoemaker and UITK for KSP2 integrated.
• Redux Template: https://github.com/KSP2Redux/Redux.Template
• Documentation: https://modding.kerbal.wiki/Main_Page

Bug Fixes & QoL Improvements

Construction

• Fixed: Using undo after attaching two parts disconnects them instead of deleting one
• Fixed: Search is inaccurate
• Fixed: dV and TWR not being calculated when focusing on new vessel in VAB

Environments

• Fixed: Other moons of celestial body aren't visible when in SOI of moon
• Fixed: Dres' rings render behind the planet

EVA

• Fixed: Kerbals rotate endlessly

Flight and Map

• Added: Flags are now visible in the map view!
• Fixed: AN/DN nodes "stick" onto screen after deleting maneuver
• Fixed: Staging in physics warp isn't possible
• Fixed: Landing gear toggles on/off in time warp
• Fixed: Science experiments continue when situation changes
• Fixed: Kerbals are recoverable on other celestial bodies
• Fixed: Solar panels generate EC even when occluded
• Fixed: Time warp limits are unbearable
• Fixed: Flags disappearing after leaving SOI
• Fixed: Flags causing terrain colliders to glitch
• Fixed: Flags resetting to default agency flag
• Fixed: Camera doesn't preserve orientation when switching from map view to flight view

FX and Audio

• Fixed: Parachute visual effects disappear after quickload
• Fixed: Ring Particles duplicate on camera mode switch
• Fixed: SRBs still make noise when fuel is depleted

Menus and Settings

• Fixed: French, German and English localizations for "Auto-Hide Navball in Map View" have been changed to "Show Navball in Map View"
• Added: Sunflare Toggle to graphics settings

Parts and Vessels

• Fixed: Inflatable Heatshield doesn't shield heat
• Fixed: Puff is now classified as an orbital engine
• Fixed: Ant is now classified as an orbital engine
• Fixed: Changed Manufacturer on TVR-200 and TVR-2160C to O.M.B

Tutorials and Missions

• Fixed: LIL CHONKER mission science reward has been increased to 350
• Fixed: Incorrect "Second Dibs: Gold Edition" and "Three is Company" mission conditions
• Fixed: Mission Granters aren't set for some missions

UI/UX

• Fixed: Trip planner dropdown isn't sorted
• Fixed: Trip planner judgement text doesn't get regenerated once results are cleared
• Fixed: Heat Gauge is unclear and visually unappealing
• Fixed: Non Stageable Resources changed to Consumables
• Fixed: "Run Experiment" action in Action Group Manager isn't displayed correctly
• Fixed: Science Category in Action Group Manager isn't displayed correctly
• Fixed: Cheats Menu dropdown has no text
• Fixed: "Game.View" UI pops up after craft crashes in F2
• Fixed: Science Reports default to "Generic default text for data"
• Fixed: Tracking Station units are just diabolically wrong
• Fixed: "Experiment Interrupted!" notification spam
• Fixed: VAB button active in VAB and Tracking Station button inactive in VAB
• Fixed: VAB button displays as active, even though it's inactive in flight.
• Fixed: R&D button active in R&D center
• Fixed: Expanding stage is impossible with one stage
• Fixed: Character limits on flag sites too low
• Fixed: Incorrect localizations in the deorbiting and science tutorial
• Added: Improved search in the VAB part picker, added support for tags
• Added: Warning icon next to Engineer Report
• Added: New Color Manager
• Added: Enhanced Orbital Info
• Added: Unified fonts between modded and stock UIs
• Added: Resources are displayed in the PAM

Other

• Added Redux Credits to the main menu
• Disabled stock online services which were already taken down

Performance

• Enable Unity multithread render settings.
• Disable Physics.autoSyncTransforms to reduce general transform change overhead. Refactor code that relied on it.
• Improve CollisionManager scalability for large vessels and use multithread collision callback API.
• Use ECS Enities and Burst for TransformModel calculations. Deprecate TransforFrame.
• Disable unused IMGUI OnGUI() events.
• VesselSAS: Use eco-friendly overload of GetComponents().
• ThermalOcclusionGraph: Remove needless Count() enumerator walk.
• Use null coalesce and getter caching on heavily used convenience getters
• Module_ResourceConverter: Remove unneeded material property getter.
• Module_RCS: Remove unnecessary string formats. Add markers.
• Module_WheelSuspension: coalesce vessel getter.
• Data_Drag: Do the cheap check first when changing cube weights.
• Module_SolarPanel: Cleanup string handling and reduce garbage.
• CenterOfThrustQuery: fix garbage and simplify code.
• GetPartOwner() is expensive, so cache results.
• Rework MessageCenterMessage subclasses to avoid garbage on Clear()
• SessionManager: Avoid garbage from re-boxing difficulty settings value
• ResourceFlowRequestManager: Fix reflection garbage in value type
• ResourceContainerGroupSequence: Fix garbage from enumerating interface,
• Fix struts causing thermal code to rebuild data every frame.
• Reducing GUID handling overhead in ThermalComponentJob
• Improving orphaned part scanning.
• Improved DeltaVStageInfo times
• Reduce DataContext garbage.
• Fixed memory leaks in thermal code
• Reduced overhead of vessels orbiting Kerbol
• Improved performance in VAB

Mod Breaking Changes

• New integrated mod loader and updated SpaceWarp APIs: https://modding.ksp2redux.org/
• Part modules implementing PartComponentModule must register with the part to receive OnUpdate() calls with Part.RegisterModuleForUpdates(this) and Part.UnregisterModuleForUpdates(this). Call during OnStart() / OnStop(), or when appropriate for what the part is doing.

Known Issues

• Not all languages are localized
• Most existing mods will not be compatible with KSP2 Redux without some modifications by their authors
• Radiators do not have reentry VFX yet