Implemented Features and Fixes

Redux is still in beta. Compared with stock KSP2 before Redux, it adds new parts and missions, flight and map-view improvements, EVA additions, UI cleanup, graphics updates, installer work, modding tools, and many fixes across the base game.

This page lists the main things already present in Redux, grouped by area for easier reading than the full release notes.

For full release notes of each update, see the Dev Blog and GitHub releases.

This reflects the current public state as of v0.2.3 Beta 6.

At a Glance

The game’s engine has been upgraded to Unity 6.4 and improved modding tools are available, including the Redux modding SDK and mod template, as well as integrated SpaceWarp, Patch Manager, and UITK for KSP2.
Redux adds new parts, tech tree changes, new missions, EVA parachutes, helmet lights, custom flags, and a Statistics window.
Flight and map view have many practical fixes and additions, including better SAS behavior, higher time warp, KSP1-style orbital camera behavior, maneuver node editing while paused, visible map flags, and vessel categories.
The VAB and construction flow have many fixes around undo, struts, symmetry, staging, fairings, docking ports, part actions, and part placement performance.
UI work includes a new Color Manager, reworked Orbital Info panel, better part picker search, clearer notifications, better localization/font handling, and cleaner various other UI improvements.
Graphics, effects, and performance work includes cloud and sun flare changes, planet-specific reentry colors, supersampling, multithreaded rendering settings, and reduced allocation pressure in many simulation and UI systems.

Added and Improved Features

Parts and Tech Tree

Added new thermal control parts, including the TCS-400X and TCS-200F radiators.
Added SM+ orbital and launcher engines, fuel tanks, adapters, decouplers, separators, boosters, a conical crew pod, and probe cores.
Added XS solid rocket boosters, camera parts, and a sticker decal part.
Extended the tech tree to include Redux parts.
Added optional interstage support to fairings.
Added SDK tools that help modders generate part icons, drag cubes, reentry meshes, engine plumes, and fairing shrouds.
Added SDK helpers for part shaders, audio setup, interaction presets, ladders, and airlocks.

Flight and Map View

Planted flags now appear in map view with their flag colors.
Flags can be deleted from map view, and existing planted flags keep their original design when the campaign flag changes.
Added camera field-of-view adjustment in flight.
Added double-click part focus and a keybind to reset flight camera state.
Added KSP1-style celestial/orbital camera behavior.
Added maneuver node creation and editing while paused.
Added scroll-wheel precision input for maneuver gizmos.
Added notifications when precision input mode changes or trim is applied/reset.
Added clearer feedback for time warp limits and warping to a point.
Added physics warp initiation in space with the Alt key.
Added 10,000,000x time warp.
Improved time warp limits so safe orbits are less constrained.
Improved physics warp status text and color feedback.
Added vessel categories and icons for clearer map and tracking station identity.
Added aerodynamic stress behavior that can break deployed parts.
Improved SAS stability.
Added flight input smoothing for normal and precision mode.
Improved vessel naming after decoupling, undocking, and docking.

EVA

Added toggleable Kerbal helmet lights.
Added helmet toggling on oxygen worlds and inside command pods.
Added EVA parachutes, including gliding, agency colors, and external seat support.
Allowed EVA Kerbals to take stored science reports out of command pods and probes.
Disabled the EVA exit obstruction check to reduce blocked exits in common cases.

Science, Tutorials, and Missions

Added a feature for locking tech tree nodes behind missions and science experiments.
Added new mission granters and Mission Control logos.
Added tier 1, 2, and 3 gateway missions.
Added the “I., P.A.I.G.E” mission series.
Added additional missions beyond the original stock mission set.
Added stored research reports to the flight report window.
Added a lower minimum science rewards difficulty option.
Improved mission objective reveal behavior for mission authors.
Fixed several mission unlocks, objective checks, rewards, and completion rules.

UI and Quality of Life

Added an in-game bug reporter in the Escape menu and on Ctrl+B. Reports can include logs, version information, screenshots, saves, and other attachments.
Added Redux Credits to the main menu.
Added a Mods menu update notification when a new Redux version is available.
Added a Statistics window in the main menu and Escape menu, which tracks various player stats and gameplay milestones.
Added custom flags from mod folders.
Added campaign flag changing in the Settings menu.
Added an improved VAB part picker search with tag support.
Added a warning icon near the Engineer Report.
Added a new Color Manager with preset persistence, tooltips, and better state handling.
Added Enhanced Orbital Info.
Added resource display in the Part Action Manager.
Added a radiator action group button.
Added advanced part actions such as “Remove from symmetry”.
Added an “Add to Staging” toggle for docking ports.
Added science-part deployment previews in the VAB.
Added a Mission Tracker button to the VAB app bar.
Added mouse-wheel scrolling in the R&D Center.
Cleaned up styling for Redux and SpaceWarp UI, including the mods menu, loading screen, flag sites, scrollbars, and windows.
Improved UI behavior on ultrawide, 3:2, and other non-16:9 displays.
Improved localization coverage and font handling, especially for Chinese, Japanese, and Korean text.
Unified fonts between stock and modded UI.
Added a setting to disable the photosensitivity warning.

Graphics, FX, and Audio

Added sunset and sunrise color shifts to sun flares.
Added different reentry effect colors per planet.
Added cloud layers and improved stock cloud shapes.
Added a sunflare graphics toggle.
Added supersampling for flight and the VAB to improve visual quality at a performance cost.
Restored countdown audio and improved countdown behavior after loading from saves.

Installer, Tools, and Infrastructure

Added the Redux Updater app for installing, updating, downgrading, uninstalling, and launching Redux.
Added Discord Rich Presence support.
Added integrated Debug Tools for multiple systems through Alt+F12.
Disabled stock online services that had already been taken down and causing errors.
Improved the logging system.
Added DirectStorage support.
Added a splash-screen skip for the SDK.

Modding Support

Integrated the core modding libraries and tools: SpaceWarp, Patch Manager, V-SwiFT, Shoemaker, and UITK for KSP2.
Upgraded the Unity version from 2022.3 to Unity 6.4.
Added Redux Template support and the Modding SDK workflow for Redux mods.
Added Project Shakespeare, an experimental KSP1 parts mod to KSP2 parts mod converter.
Added UITK helpers for event binding, commands, sound handling, localization conversion, app shells, and dialogs.
Added shared UI pieces for resizing, drag handles, tooltips, automatic text sizing, and common mod windows.
Added an API for mouse-click sort ordering between UITK and UGUI windows.
Improved UI-under-cursor checks so stock code accounts for modded UI.
Improved the KerbalUI theme and moved away from deprecated UITK experimental controls.
Rewrote Patch Manager around Lua scripting, with better diagnostics, generated stubs, patch ordering controls, and config values.
Added Patch Manager helpers for selection, audio presets, PAM visibility, caching, summaries, and error reporting.
Added a Visual Studio Code extension for Patch Manager Lua workflows.
Added REPL support to the SpaceWarp console.
Added shared config registration through the Redux and SpaceWarp config system.
Improved V-SwiFT variant tracking and attach-node integration.

Fixed Bugs and Quality Issues

Construction and VAB

Fixed undo behavior that could disconnect parts, struts, or vessel assemblies instead of restoring the intended state.
Fixed several strut problems, including placement, symmetry, and cross-wiring issues.
Fixed VAB crash cases and some launch explosions caused by construction bugs.
Fixed multiple symmetry bugs involving preview ghosts, docking interactions, action groups, radiators, and deployable parts.
Fixed stage creation, stage reordering, abort action, docking port, decoupler, and “Add to Staging” edge cases.
Fixed copying parts without copying resources.
Fixed procedural wings not recalculating mass in the VAB.
Fixed VAB camera resets and airplane-mode camera behavior.
Fixed first-load fairing creation problems.
Fixed several fairing problems, including clipping checks, lag, snapping, diameter selection, shielding, interstage behavior, and transparent materials.
Fixed deployable parts being blocked while extending.
Fixed Color Manager preset handling, eyedropper behavior, revert behavior, apply mode, and localized button overflow.
Fixed docking ports getting stuck unable to dock after nose cones or other VAB attachments.
Fixed stock vessels remaining visible on the launch pad after being turned off.
Fixed launch buttons failing in certain cases.
Fixed VAB part info and size category readability problems.
Fixed thermal tab availability in the Action Group Manager.
Improved VAB performance while placing parts and loading vessel data.

Flight, Map, and Simulation

Fixed several maneuver node problems where nodes could stick to the screen, break after saves, disappear after loading, or become impossible to move.
Fixed intersect markers not showing in map view without an active maneuver.
Fixed map UI and telemetry behavior when targeted vessels are destroyed.
Fixed tracking station and map object list issues after renaming vessels or entering KSC.
Fixed camera orientation resets between map view, flight view, KSC entry, and part focus.
Fixed time warp and physics warp problems around landing gear toggles, staging during physics warp, and Right Alt physics warp behavior.
Fixed science experiments continuing after situation changes.
Fixed Kerbals being recoverable where they should not be.
Fixed solar panels generating power while occluded and solar panel behavior on Laythe.
Fixed planted flags disappearing or resetting after SOI changes.
Fixed flag-related terrain collider glitches, failed destruction, and invalid planting locations.
Fixed flags and miscellaneous object data in the tracking station.
Fixed decoupling, undocking, docking, vessel recreation, and focus assignment issues.
Fixed docking so vessel combination behaves more reliably.
Fixed single-part SAS oscillation and stale SAS telemetry.
Fixed wheel torque axes on rotated multi-wheel vessels.
Fixed out-of-fuel maneuver duration calculations and infinite-fuel event behavior.
Fixed inaccurate orbital lines in other SOIs by accounting for axial tilt.
Fixed Kerbol shining through Kerbin and overly bright Jool/Eve clouds.
Fixed vessel validity and simulation-state edge cases.
Fixed portrait culling cleanup after vessel changes.

Parts, Resources, Thermal, and Modules

Fixed heat shield tuning problems.
Fixed engines with multiple nozzles overheating incorrectly.
Fixed Puff and Ant engine category classification.
Fixed manufacturer metadata on TVR parts.
Fixed radiator activation, extension, and moving-state behavior.
Fixed parachute VFX disappearing after quickload and parachute deployment forecasts triggering too early.
Fixed edge cases across aerodynamic, deployable, fairing, engine, RCS, reaction wheel, wheel, color, and science modules.
Fixed SRB audio after fuel depletion and SRB spool timing on launch.
Fixed resource converter and resource lookup behavior in several modded/imported part cases.

EVA

Fixed Kerbals rotating endlessly.
Fixed Kerbal and sample container animations getting out of sync during time warp.
Fixed Kerbal ground-check errors.
Fixed invalid flag-planting behavior on spacecraft.

Science, Missions, and Tutorials

Fixed missions completing without their actual objectives being completed.
Fixed missions being impossible or unlocking at the wrong time.
Fixed incorrect objective text, reward values, and mission granter assignments.
Fixed primary mission video pop-up ordering.
Fixed tier unlock animation playback.
Fixed disabling Cadet Orientation breaking mission completion.
Fixed localized biome and mission text problems.
Fixed Laythe ocean crashes not counting correctly for mission objectives.
Fixed science experiments causing load errors.
Fixed science transmission through relays.
Fixed science reward UI display limits.
Fixed default placeholder text appearing in science reports.

UI, Menus, and Localization

Fixed resolution labels, non-standard resolutions, settings sliders, hover sounds, and settings-menu localization.
Fixed the navball state after reverting to launch and improved navball map-view wording.
Fixed vertical speed scaling and Tracking Station unit display issues.
Fixed heat gauge clarity and part heating bars hiding behavior.
Fixed action group labels, science category display, non-stageable resource naming, and vessel action buttons.
Fixed cheat menu dropdown text and docking-related menu errors.
Fixed F2 hiding behavior for stock UI, Redux UI, SpaceWarp UI, mod windows, part outlines, heating bars, and the assembly parts picker.
Fixed UI locks getting stuck after windows close.
Fixed several UITK window issues, including dragging, multiline text fields, offscreen spawning, scroll speed, tooltip positioning, game input blocking, and window layering.
Fixed scrolling over modded windows also zooming the game.
Fixed SpaceWarp console log display and console styling.
Fixed mods menu setting buttons and version notifications.
Fixed Mission Control categories remaining clickable when collapsed.
Fixed mission description rich text rendering.
Fixed R&D Center node readability and ultrawide parallax behavior.
Fixed campaign folders being deleted when empty.
Fixed escape-menu flag setting and live language switching.
Fixed Statistics window interactions that could block reverting or loading non-campaign saves.
Fixed UI breakage from Chinese, Japanese, and Korean localization.
Improved font fallback safeguards.
Fixed text overflow and readability issues in part subtitles, throttle text, color manager buttons, flag site names/descriptions, and localized UI.
Fixed common loading-state and UI lifetime errors across Redux and stock UI.

Graphics, FX, Audio, and Environments

Fixed other moons not being visible while inside a moon’s SOI.
Fixed Dres’ rings rendering behind the planet.
Fixed mission control shader display color.
Fixed VAB lighting and part color darkening.
Fixed ring particles duplicating when switching camera modes.
Fixed FX behavior when teleporting.
Fixed countdown timing and countdown-on-load behavior.
Fixed Mission Control lighting issues.

Modding and SDK

Fixed configuration callbacks firing before new values were applied.
Fixed mod localization override behavior.
Fixed Patch Manager caching, sole-selector patches, parser error counting, and editor invalidation.
Reduced Patch Manager performance and allocation overhead.
Fixed runtime prefab changes carrying back to prefab files on disk in the editor.
Fixed V-SwiFT variant resets, attach-node integration, and Patch Manager integration.
Fixed flight-state transform activation for imported parts.

Performance and Stability

Enabled Unity multithreaded rendering settings.
Reduced general transform synchronization overhead and refactored code that depended on automatic transform syncing.
Improved CollisionManager scalability for large vessels and moved more collision callback work to multithreaded APIs.
Used ECS and Burst for TransformModel calculations.
Reduced map-view allocation pressure and RelativeOrbitSolver overhead.
Reduced allocation pressure in background part systems, thermal code, solar panels, RCS, wheels, engines, resources, drag, the message center, sessions, and data contexts.
Cached expensive ownership and getter lookups in frequently used code.
Removed unused IMGUI event processing.
Reduced save UI hierarchy and layout overhead.
Improved orphaned part scanning.
Improved DeltaV stage timing calculations.
Fixed memory leaks and unnecessary rebuilds in thermal code.
Reduced overhead for vessels orbiting Kerbol.
Improved VAB performance and part placement responsiveness.
Reduced DirectStorage-enabled loading overhead where supported.