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Arma Reforger ExperimentalNews1.9.0.5 Experimental Update
Game update

1.9.0.5 Experimental Update

Arma Reforger Experimental · published 15 Sep 2026, 11:24 UTC

All newsPlayers around this dateRead on Steam

Attention Soldiers,

We updated the Steam Experimental application of the game.

Leave any feedback in our new Feedback Tracker and join the discussion on our official Discord.

1.9.0.5 Changelog

Vehicle Simulation

  • Added: Inter-axle differential (IAD) simulation

  • Added: Ackermann steering

  • Added: Wheel hub orientation support (camber and toe), as well as adjustments for all vanilla vehicles

  • Added: Steering axis (kingpin) support (caster and SAI), as well as adjustments for all vanilla vehicles

  • Added: Custom Pacejka tire model for all vehicles

  • Added: Vehicle self-steering (e.g., into a slope) when they have no driver or the driver is unconscious or dead

  • Added: Engine compression braking when the vehicle is turned off (slows down the vehicle in gear, even without brakes)

  • Added: Strong gear grinding force feedback when reversing gear direction at high speeds

  • Changed: Powertrain simulation overhaul and complete rewrite of all component simulations (Engine, Clutch, Diff, Wheels)

  • Changed: Engine can stall due to improper clutch release (manual transmission only), including getting out without putting the car in neutral

Stability and Performance

  • Changed: Improved VoN direct-voice performance

  • Changed: Several memory optimizations

  • Fixed: Crash on marker entity without visual object

  • Fixed: Crashes while processing commands

  • Fixed: Compound shape-related crash when updating merged geometry

  • Fixed: Possible crash in item animation system and vehicle light portals during unregistration

  • Fixed: Possible crash on adding tiles over navmesh's capacity

  • Fixed: Crash in UI text widget when it is not in workspace

  • Fixed: Update of geometries can crash when trying to re-merge child to root

  • Fixed: Crash when destroying a full BRDM-2 with GM lightning strike

  • Fixed: Crash when client was on HQC logistics screen during server crash

  • Fixed: Possible crash in buoyancy system, connected with ragdoll

  • Fixed: Possible crash in simulation of projectiles

  • Fixed: Possible issues caused by running unsafe code from parallel simulation

  • Fixed: PS5 player should not be kicked from server when he goes to home screen

Assets

  • Added: Added a third optic to the LAV-25 turret which has night vision capability

  • Added: Added three missing color lenses to the MX991 flashlight (blue, green, and orange)

  • Added: FIA variants of the Šárka 1203 and Šárka 105 as spawnable vehicles for FIA

  • Added: Canteen for replenishing hydration

  • Added: LAV-25 can fire smoke grenades from its L8A1 launchers mounted on the turret

  • Added: LAV-25 rate-of-fire user action

  • Added: Vehicle trails

  • Added: Vehicles now show mud particle effect instead of dust when surfaces are wet

  • Added: Vehicles can get dusty or muddy depending on the environmental conditions, and get cleaned by rain or wading through water

  • Added: Rally Posters on Message Boards

  • Changed: 3rd person camera helicopter zoom back to previous version

  • Fixed: Flashlight light was below the flashlight itself in some cases

  • Fixed: Helicopter friction balancing wasn't working correctly, causing the helicopters to slip

  • Fixed: Lamps on some light towers (e.g. ones in Arland harbor) would require more than a full magazine of 5.56 to destroy them

  • Fixed: No item could be placed in Alice Vest due to volume exceeding

  • Fixed: NSV shell ejection was in the incorrect place

General

  • Added: Bushes and small foliage can be removed using a shovel

  • Added: Magazine Repacking

  • Added: Skid marks for all vehicles when wheels are slipping

  • Added: Wheel smoke/burnout effect support (not enabled on all vehicles)

  • Added: Bushes and characters will no longer obstruct the placement of buildings in build mode

  • Added: Compositions (outside of machine guns and smaller objects) will clear away nearby bushes and low foliage upon being built

  • Changed: Player can now carry larger ammo boxes (PKM/M2/M240/etc.) in the hand slot if there isn't enough space for it in the inventory

  • Changed: Impact sounds broadcast at relative positions so they are not played all over the place and reflect where they actually happened on the entity

  • Changed: Reduced the horizontal part of the recoil for turrets

  • Tweaked: Better placement of dropped Machine Guns on terrain

  • Fixed: Destructibles that destroy destructibles on destruction did not queue damage properly

  • Fixed: Character magazine desync issue if a character was killed during reload

  • Fixed: Refunding a vehicle would destroy stored supplies instead of distributing them into nearby storages

  • Fixed: Cloud shadows were flickering and disappearing sometimes

  • Fixed: Particle effects were not deleted when a vehicle got deleted

  • Fixed: Edge case when AI could spawn while there are observers nearby

  • Fixed: AI Logistic drivers are now forced to have simulation LOD and not get dormant

Playable Content

  • Added: When placing an 'Establish base request' task, the game will now show circles which will indicate the approximated build area of that base (white), minimal distance to another base (green), base radio range (teal), and radio range when the base will have a radio relay built (yellow)

  • Changed: FIA players will now use randomized loadouts when they spawn

  • Changed: Increased the cost and rank required to purchase the LAV-25 from 1800 supplies and a Lieutenant rank to 2100 supplies and Captain rank

  • Changed: Decreased the cost of BTR-70 (975->850), BRDM-2 (900->725), and M1025 with M2HB (475→380)

  • Changed: Reduced the price of the armed variants (variants without rockets) of UH-1H (-175) and Mi-8 (-175)

  • Changed: Significantly reduced the price of the unarmed transport variants of the UH-1H (-350) and Mi-8 (-325)

  • Changed: Removed supplies that were inside freshly spawned ambulances and repair trucks, and to compensate for that, their cost was lowered by the amount of supplies that they previously had

  • Changed: Increased the amount of supplies refunded when selling a vehicle. Previously 25% of its original price, and now it will give up to 70%

  • Changed: Increased the range in which vehicle supplies' unload action will search for storage from 12m to 40m

  • Changed: Increased the range from which supplies can be loaded to a vehicle from 12m to 25m

  • Changed: Vehicle crewmembers (not passengers) will now receive a fraction of the amount of rank progression gained by the player who killed an enemy while in that vehicle (does not stack with squad kill assist)

  • Changed: Squad members who are within 200m of a member who kills an enemy will receive 7 rank progression points for squad kill assist

  • Changed: HQC Everon: Increased minimal (3.5km -> 5km) and preferred (5km -> 10km) distances between randomly selected starting bases

  • Changed: HQC Kolguyev: Increased minimal (3km -> 4.6km) and preferred (4km -> 5km) distances between randomly selected starting bases

  • Changed: Disabled usage of most southeast base (near St. Pierre) as a starting location in HQC. Base can be re-enabled by overriding the mission header in the server config, and setting "m_bCanBeHQ": true for "m_sBaseName": "StartingPos05". More info on how to do it on Biki.

  • Fixed: Radio relays could be disassembled when there was only a blueprint of another relay in the base and not a fully built one

  • Fixed: Player was blamed for suicide if they drove over or stepped on a mine from a minefield spawned by GM or one that was preplaced in such a scenario

Controls

  • Added: Full steering wheel support (including gas, brake, clutch, and shifting stick)

  • Added: Force feedback for steering wheel

  • Changed: Engine vibration gamepad effect has been reduced to give more importance to the suspension vibration

  • Changed: Imposed max steering speed on analog input and added smooth centering for a fair steering experience across all input devices

  • Added: Mouse steering is now available for all wheeled vehicles - Disabled by default

  • Added: Shifting to gears 1-6 and neutral to keybinding menu

  • Added: Suspension vibration gamepad effect

Modding

  • Added: ABS braking in Wheel class

  • Added: Kingpin and suspension axis in Axle class

  • Added: "Mirror wheel position" in Axle class for faster vehicle setup

  • Added: "Show diag in editor" in Vehicle Simulation for showing the diagnostic shapes in editor

  • Added: Inter-axle differentials (IADs) are now functional

  • Added: Powertrain component parenting (not enabled for all components for backward compatibility reasons)

  • Added: Steering class for advanced steering parameters (Ackermann steering, steering torque, etc.)

  • Added: Clutch torque limit is now functional.

  • Added: Tire tread parameter is now used to interpolate between tread and non-tread friction coefficients of surfaces for better off-road vs on-road simulation

  • Added: Tire Model class, with two possible options, Pacejka2002 (MF5.2) and Pacejka94

  • Added: Pacejka Plot Tool for verifying the Tire Model correctness

  • Added: Script API methods for updating most of the vehicle simulation parameters at runtime (not MP synced)

  • Added: GamepadEffectCollection for running multiple gamepad effects at once.

  • Added: Configs/Weapons/Ammo/AmmoList.conf which houses all projectiles that are meant to be usable for the magazine repacking feature

  • Added: SCR_MagazineGadgetComponent, which is meant to be used for magazines that can be carried in the hand slot by the players

  • Changed: SCR_WheelSlotInfo implementation moved from script to gamecode (it now inherits from the gamecode class WheelSlotInfo)

  • Changed: Renamed VehicleDustComponent to VehicleWheelEffectComponent

  • Changed: SCR_VehicleDustPerWheel implementation moved from script to gamecode (it now inherits from the gamecode class VehicleWheelEffectComponent)

  • Changed: Renamed SCR_ChangeBallisticPageAction to SCR_ChangeDataPageAction to better reflect that it can be used with SCR_DataDisplayGadgetComponent

  • Removed: WorkshopItem from BackendAsync

  • Removed: "Torque share" parameter in Axle class. Instead, wheel differentials can now be parented to the Gearbox or an IAD

  • Removed: Pacejka class removed from Wheeled simulation (it wasn't functional). Replaced with Tire Model

  • Removed: Engine coupled inertia removed (now detected automatically)

  • Removed: Shifting factors and shifting RPM from CarControllerComponent (they are now detected automatically from the simulation)

  • Removed: Steering curve removed from CarControllerComponent

  • Fixed: OnWeaponRaisingStarted, OnWeaponRaisingFinished, OnWeaponLoweringStarted, OnWeaponLoweringFinished script callbacks could trigger incorrectly or not at all

Known Issues:

The following issues have been fixed internally and will be released in the next update:

  • Clutch is missing from the keybinding menu

  • The keybinding menu cannot bind the new vehicle actions (gears and clutch) properly

  • Some vehicles drift to one side

  • When shifting gears automatically, some vehicles may get stuck in a loop of shifting up and down.

  • Some racing wheels may stop working when switching between Game Mode and Edit Mode in Workbench (driver issue)

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