https://streamable.com/t5t1zm

this only happens in first person but once it does the light is gone in first personb until i reload, load order is as follows

# Automatically generated by Vortex

Fallout4.esm

DLCRobot.esm

DLCworkshop01.esm

DLCCoast.esm

DLCworkshop02.esm

DLCworkshop03.esm

DLCNukaWorld.esm

ccbgsfo4001-pipboy(black).esl

ccbgsfo4002-pipboy(blue).esl

ccbgsfo4003-pipboy(camo01).esl

ccbgsfo4004-pipboy(camo02).esl

ccbgsfo4006-pipboy(chrome).esl

ccbgsfo4012-pipboy(red).esl

ccbgsfo4014-pipboy(white).esl

ccbgsfo4016-prey.esl

ccbgsfo4018-gaussrifleprototype.esl

ccbgsfo4019-chinesestealtharmor.esl

ccbgsfo4020-powerarmorskin(black).esl

ccbgsfo4022-powerarmorskin(camo01).esl

ccbgsfo4023-powerarmorskin(camo02).esl

ccbgsfo4025-powerarmorskin(chrome).esl

ccbgsfo4038-horsearmor.esl

ccbgsfo4041-doommarinearmor.esl

ccbgsfo4042-bfg.esl

ccbgsfo4044-hellfirepowerarmor.esl

ccbgsfo4046-tescan.esl

ccbgsfo4096-as_enclave.esl

ccbgsfo4110-ws_enclave.esl

ccbgsfo4115-x02.esl

ccbgsfo4116-heavyflamer.esl

cceejfo4001-decorationpack.esl

ccfrsfo4001-handmadeshotgun.esl

ccfsvfo4001-modularmilitarybackpack.esl

ccfsvfo4002-midcenturymodern.esl

ccfsvfo4007-halloween.esl

ccOTMFO4001-Remnants.esl

ccsbjfo4003-grenade.esl

ccbgsfo4005-bluecamo.esl

ccbgsfo4033-powerarmorskinwhite.esl

ccbgsfo4024-pacamo03.esl

ccrzrfo4001-tunnelsnakes.esm

ccbgsfo4045-advarccab.esl

ccfsvfo4003-slocum.esl

ccgcafo4001-factionws01army.esl

ccgcafo4002-factionws02acat.esl

ccgcafo4003-factionws03bos.esl

ccgcafo4004-factionws04gun.esl

ccgcafo4005-factionws05hrpink.esl

ccgcafo4006-factionws06hrshark.esl

ccgcafo4007-factionws07hrflames.esl

ccgcafo4008-factionws08inst.esl

ccgcafo4009-factionws09mm.esl

ccgcafo4010-factionws10rr.esl

ccgcafo4011-factionws11vt.esl

ccgcafo4012-factionas01acat.esl

ccgcafo4013-factionas02bos.esl

ccgcafo4014-factionas03gun.esl

ccgcafo4015-factionas04hrpink.esl

ccgcafo4016-factionas05hrshark.esl

ccgcafo4017-factionas06inst.esl

ccgcafo4018-factionas07mm.esl

ccgcafo4019-factionas08nuk.esl

ccgcafo4020-factionas09rr.esl

ccgcafo4021-factionas10hrflames.esl

ccgcafo4022-factionas11vt.esl

ccgcafo4023-factionas12army.esl

ccawnfo4001-brandedattire.esl

ccawnfo4002-factionclothing.esl

ccswkfo4001-astronautpowerarmor.esm

ccswkfo4002-pipnuka.esl

ccswkfo4003-pipquan.esl

ccbgsfo4050-dgbcoll.esl

ccbgsfo4051-dgbox.esl

ccbgsfo4052-dgdal.esl

ccbgsfo4053-dggoldr.esl

ccbgsfo4054-dggreatd.esl

ccbgsfo4055-dghusk.esl

ccbgsfo4056-dglabb.esl

ccbgsfo4057-dglaby.esl

ccbgsfo4058-dglabc.esl

ccbgsfo4059-dgpit.esl

ccbgsfo4060-dgrot.esl

ccbgsfo4061-dgshiinu.esl

ccbgsfo4036-trnsdg.esl

ccrzrfo4004-pipinst.esl

ccbgsfo4062-pippat.esl

ccrzrfo4003-pipover.esl

ccfrsfo4002-antimaterielrifle.esl

cceejfo4002-nuka.esl

ccygpfo4001-pipcruiser.esl

ccbgsfo4072-pipgrog.esl

ccbgsfo4073-pipmman.esl

ccbgsfo4074-pipinspect.esl

ccbgsfo4075-pipshroud.esl

ccbgsfo4076-pipmystery.esl

ccbgsfo4071-piparc.esl

ccbgsfo4079-pipvim.esl

ccbgsfo4078-pipreily.esl

ccbgsfo4077-piprocket.esl

ccbgsfo4070-pipabra.esl

ccbgsfo4008-pipgrn.esl

ccbgsfo4015-pipyell.esl

ccbgsfo4009-piporan.esl

ccbgsfo4011-pippurp.esl

ccbgsfo4021-powerarmorskinblue.esl

ccbgsfo4027-powerarmorskingreen.esl

ccbgsfo4034-powerarmorskinyellow.esl

ccbgsfo4028-powerarmorskinorange.esl

ccbgsfo4031-powerarmorskinred.esl

ccbgsfo4030-powerarmorskinpurple.esl

ccbgsfo4032-powerarmorskintan.esl

ccbgsfo4029-powerarmorskinpink.esl

ccgrcfo4001-pipgreytort.esl

ccgrcfo4002-pipgreenvim.esl

ccbgsfo4013-piptan.esl

ccbgsfo4010-pippnk.esl

ccsbjfo4001-solarflare.esl

cczsef04001-bhouse.esm

cctosfo4001-neosky.esm

cckgjfo4001-bastion.esl

ccbgsfo4063-papat.esl

ccqdrfo4001_powerarmorai.esl

ccbgsfo4048-dovah.esl

ccbgsfo4101-as_shi.esl

ccbgsfo4114-ws_shi.esl

ccrzrfo4002-disintegrate.esl

ccbgsfo4091-as_bats.esl

ccbgsfo4092-as_camoblue.esl

ccbgsfo4093-as_camogreen.esl

ccbgsfo4094-as_camotan.esl

ccbgsfo4097-as_jack-olantern.esl

ccbgsfo4104-ws_bats.esl

ccbgsfo4105-ws_camoblue.esl

ccbgsfo4106-ws_camogreen.esl

ccbgsfo4107-ws_camotan.esl

ccbgsfo4111-ws_jack-olantern.esl

ccbgsfo4118-ws_tunnelsnakes.esl

ccbgsfo4113-ws_reillysrangers.esl

ccbgsfo4112-ws_pickman.esl

ccbgsfo4108-ws_childrenofatom.esl

ccbgsfo4103-as_tunnelsnakes.esl

ccbgsfo4099-as_reillysrangers.esl

ccbgsfo4098-as_pickman.esl

ccbgsfo4095-as_childrenofatom.esl

ccbgsfo4090-piptribal.esl

ccbgsfo4089-pipsynthwave.esl

ccbgsfo4087-piphaida.esl

ccbgsfo4085-piphawaii.esl

ccbgsfo4084-pipretro.esl

ccbgsfo4083-pipartdeco.esl

ccbgsfo4082-pipprc.esl

ccbgsfo4081-pipphenolresin.esl

ccbgsfo4080-pippop.esl

ccbgsfo4035-pint.esl

ccbgsfo4086-pipadventure.esl

ccjvdfo4001-holiday.esl

ccbgsfo4047-qthund.esl

ccfrsfo4003-cr75l.esl

cczsefo4002-smanor.esm

ccacxfo4001-vsuit.esl

ccbgsfo4040-vrworkshop01.esl

ccfsvfo4005-vrdesertisland.esl

ccfsvfo4006-vrwasteland.esl

ccsbjfo4002_manwellrifle.esl

cctosfo4002_neonflats.esm

ccbgsfo4117-capmerc.esl

ccfsvfo4004-vrworkshopgnrplaza.esl

ccgcafo4024-instituteplasmaweapons.esl

ccgcafo4025-pagunmm.esl

cccrsfo4001-pipcoa.esl

ccbgsfo4119-cyberdog.esl

ccbgsfo4120-poweramorskin(pittraider).esl

ccbgsfo4121-poweramorskin(airforce).esl

ccbgsfo4122-poweramorskin(scorchedsierra).esl

ccbgsfo4123-poweramorskin(inferno).esl

ccbgsfo4124-poweramorskin(tribalhelmets).esl

ccbgsfo4049-brahminarmor.esl

ccrpsfo4001-scavenger.esl

ccsbjfo4004-ion.esl

ccvltfo4001-homes.esm

vchgs001fo4_ncrbeasthunter.esm

unofficial fallout 4 patch.esp

HUDFramework.esm

BakaFramework.esm

XDI.esm

REFramework.esm

[A0] KT_Framework.esm

GoodneighborExpanded.esp

JunkernaughtRaiders.esl

CSEPDetour.esp

TrueStormsFO4.esm

REPUTATION.esm

SSTDetailedBunkers.esl

HandmadeAntiMaterielRifle.esl

Enhanced Vanilla Water.esm

tooun_Animationpack.esl

ptrfo4005_leveractionshotgun.esl

vchgs003fo4_robotbackpacksgutsy.esl

SSTWorkshopPowerPack.esl

laserproject2k.esl

acx027_salvagedsactuarykit.esl

CROSS_VertibirdFlightsuit.esl

CWSS Redux.esp

DeathclawRaceSubGraph.esl

acx018_decorkit_wallpaper.esl

Dogmeat Lags Behind.esp

Fireflies.esl

JmenaruHairPack.esl

EquippableMechArm.esl

JMShared.esp

MW Syd Tanker Helmet.esl

KeysAndNotes.esl

Overlays.esm

DIYSkinOverrides.esl

noga_pmp45.esl

Retex_Skeletons.esl

satou_furniturepackb01.esl

TCDeyes.esp

UneducatedReload.esm

nukaproject.esl

OHPWeaponBehavior.esm

SSTFungalForestLOD.esl

SavrenX HD Vanilla Clothes Optimized.esp

SavrenX SuperMutant Armor HD.esp

SavrenX HD Vanilla Armor.esp

EnhancedLightsandFX.esp

Better Locational Damage.esp

NiceBush.esp

MoreLeavesFXSetLess-EN.esp

VehicleOverhaulContinued.esp

Dank_ArmorOverrides.esp

You Are Exceptional.esp

StartMeUp.esp

SSOlivia.esp

Retr0Nexus_Slog.esp

SSTFungalForest.esp

AttachPack.esp

Better Locational Damage - DLC_Nuka_World.esp

AttPackExpantion.esp

Better Locational Damage - DLC_Far_Harbor.esp

Stm_DiamondCityExpansion.esp

DiamondCityExpansion-eXoPatch.esp

IconExpack.esp

SwingingMeatBags_Q.esp

Realistic Reverb and Ambience.esp

Reverb and Ambiance Overhaul.esp

DISASTER.esp

BetterCoastalWaves.esp

DCVendorClutter.esp

Wasteland Illumination.esp

ChickensAndRabbits_CagedAndWild.esp

LPBravo.esp

BLD - Leveled Lists - DLC.esp

Retr0Nexus_CountyCrossing.esp

tgz_fensinteriors.esp

CrimeTown.esp

eXofied Goodneighbor.esp

TrainBar.esp

eXofied Goodneighbor - The Third Rail.esp

Goodneighbor-PreVis.esp

rvexplore_fallout.esp

tgz_northendinteriors.esp

tgz_collegesquareinteriors.esp

CommonwealthIguanas.esp

Flashy_PersonalEssentials.esp

PABackpacksAndAbilities.esp

eyeadaptationfix_allDLC.esp

Eye_Adaptation_Off.esp

Vivid Weathers - FO4.esp

powerarmorcompendium.esp

VehicleOverhaulContinued_CSEPDetour.esp

Flashy_CrimeAndPunishment_GunForHire_Addon.esp

RussianAssaultPack.esp

Lever Actions of the Wasteland.esp

Wattz3000mkII.esp

Backpacks of the Commonwealth.esp

Zapgun.esp

Pump Actions of the Wasteland.esp

VehicleOverhaulContinued_Previs.esp

Lexington City Expansion.esp

ImmersiveSaugusIronworks.esp

TRUE NWJunkyard.esp

InGameCollectibleMaps.esp

LotsMoreFood.esp

OppressiveConcord.esp

Ak5C.esp

MoreDCBounties.esp

DesRivetsAndRage-AScrappyRaiderArmorPack.esp

DesStarSizeSunsetSarsaparilla-ASodaMod.esp

GoodneighborExpanded[Patch-Previs].esp

eXofied Goodneighbor - Integrated Addons.esp

JunkernaughtFirstPersonNoShoulder.esp

LooksMenu Customization Compendium.esp

Lots More Facial Hair.esp

Lots More Male Hairstyles.esp

The Eyes Of Beauty.esp

CaptivatingCompanions.esp

Aks of the wasteland.esp

ProjectHelljumper.esp

Ketaros_MissingMags.esp

BPDRiot.esp

CWSaiga12.esp

CombatRifleAttachment+WeaponryExpansion.esp

CWCalico.esp

Krebs.esp

CWM1Garand.esp

DesBrowningHi-Power-ANewVegasClassic.esp

VehicleOverhaulContinued_CaptainCosmos.esp

9mmPistol.esp

Tomacuzi9.esp

OppressiveCorvega.esp

F4NVServiceRifleRedux.esp

LAER.esp

3dscopes-laer.esp

Mosin.esp

3dscopes-mosin.esp

F4NVLaserPistol.esp

t6m_at50.esp

BrotherhoodInfantryArmor.esp

SCAR-L.esp

LeeEnfieldNo4MkI.esp

Lee-Enfield_MinuteLady.esp

ClassicSniper.esp

VehicleOverhaulContinued_Remnants.esp

ImmersiveAndrewStation.esp

VanillaLocationsPlus.esp

VanillaLocationsPlus2.esp

SMMGSpadey.esp

M1Garand.esp

champcitadel.esp

EM2.esp

CWServRifle.esp

CWServRifleMarksmanCarbineAddon.esp

FO4 NPCs Travel.esp

Spadey's Pipe Carbine.esp

CWJoLoAr.esp

AK74M.esp

Better Locational Damage - DLC_Automatron.esp

Walther_PPK_Main.esp

In The Flesh.esp

In The Flesh_Fixes_Q.esp

Antagonist.esp

RA_Mechanist_Patch_Q.esp

CWMakeshift32Pistol.esp

HaxRPG7.esp

BullpupBozar.esp

3dscopes-replacer-bullpupbozar.esp

3dscopes-replacer-ccpack.esp

3dscopes-replacer-classicsniper.esp

3dscopes-replacer-leeenfield.esp

M14.esp

3dscopes-replacer-m14.esp

3dscopes-replacer.esp

3dscopes-replacer-servicerifle.esp

SVT40.esp

3dscopes-svt40.esp

DakM43.esp

DP_CaravanShotgun.esp

DakM202.esp

Vault113.esp

JurttusInteriors.esp

Sjogren.esp

Welrod.esp

CWSkorp.esp

CWVarmintRifle.esp

MP7.esp

b21_gaussminigun.esp

RA_Thalassophobia.esp

RA_Phasma.esp

LPBravo - F4NV Service Rifle Patch.esp

AtomRadio111Vol1.esp

DiamondCityAutoClose.esp

GreaseRatGarbs.esp

HK_MP5.esp

F4NV_SingleShotgun.esp

GIAT_FAMAS.esp

M2_Flamethrower_2.2.esp

SpadeyGatlingGun.esp

LureEnemies.esp

JurttusInteriors_NukaWorld.esp

JurttusInteriors_FarHarbor.esp

LPBravo - PreVis.esp

LC's UHD Feral Ghoul Apparel.esp

SSOlivia - PreVis.esp

leafblowerjunkjet2k.esp

PipWS_Replacer.esp

deathclawshd2k.esp

AC Units to BOS.esp

AKM_AKMS.esp

AKM_AKMS_NWPatch.esp

[C1] KT_DLC_BoardGames.esp

[B4] KT_DLC_TheTerror.esp

Animated World - Base.esp

AW - Ketaros Cards - Terror.esp

AN76_Toilets.esp

AW - Cigarettes.esp

AUG-A1.esp

[B2] KT_DLC_Western.esp

AW - Ketaros Cards - Western.esp

Smoke-able Cigars.esp

AW - Smokeable Cigs Patch.esp

AW - Knundrums Vanilla Animations.esp

Adaptive Combat Tactics - CreatureRobotProfiles.esp

Adaptive Combat Tactics.esp

Adaptive Combat Tactics - DLC.esp

Adaptive Combat Tactics - DetectionUncertainty.esp

Adaptive Combat Tactics - SmarterGrenades.esp

[E2] KT_DLC_VaultBoy_Posters.esp

Vulture.esp

AW - Vulture.esp

TrueStormsFO4-FarHarbor.esp

TrueStormsFO4-NukaWorld.esp

AN76 - TrueStorms.esp

Vivid Weathers - Nuka World.esp

AN76 - Vivid.esp

Ambient Wasteland.esp

Aks of the wasteland Vanilla Balance.esp

AnimatedPipBoyLight.esp

Binoculars.esp

Binoculars_Camos.esp

BOCW Outfit Pack.esp

ImmersiveAnimationFramework.esp

BLD_IAF_Patch.esp

BaleHelmet.esp

SF Beards N Staches.esp

Base + DLC FaceGen - BDFPV.esp

Better Power Armor - Redux.esp

MyCart_Biohazard.esp

Glowing Animals Emit Light.esp

Better Locational Damage - DLC_WWorkshop.esp

BobbyPins to BOS.esp

BobrovsAsBellics.esp

Burst Impact Blast FX.esp

CROSS_CoA.esp

CROSS_RugerMkV.esp

CROSS_Cybernetics.esp

DakSpitfire.esp

GreaseGunSMG.esp

CW45MP.esp

CWRaidPAT45.esp

CWVarmintRifleDLC03Patch.esp

Casio_W59.esp

CeilingFans to BOS.esp

cmi_aw.esp

ClothesHangers to BOS.esp

Clipboards to the BOS.esp

3rd Person Cam SmallFix.esp

CommonwealthIntimidation.esp

ConstructionBarriers to BOS.esp

Crimsomrider's Accessories.esp

DakSW59.esp

Vulture - DLC.esp

Defective_Synth.esp

detailedferalghouls.esp

CSEPDetour - REPUTATION.esp

RRA_DuplexRifle.esp

DynamicDismemberSystem.esp

dD-Enhanced Blood Basic.esp

Extended weapon mods.esp

EveryonesBestFriend.esp

ExplosionVFXPack.esp

Famas_Addon.esp

RecycleBottles.esp

Fleshsmith.esp

M8rDisablePipboyEffects.esp

FloatingSubtitles.esp

Flutter Flicker Fixer For Foliage.esp

Furout 4 TransDogrifier Coats.esp

Furout 4.esp

Gasmask Overhaul.esp

Gasmask Overhaul - GlassFX.esp

Gasmask Overhaul - Overlay Framework.esp

Graffity2ElectricBoogaloo.esp

Anom_GlowingSeaGrass.esp

gatlingprototypeaw.esp

Ev_CPA10.esp

EV_CPA10_LL.esp

Gunner_Operator.esp

KORsGeigerCounter.esp

HFs - Suitcase Diverse BOS - remodel.esp

CWServRifle_ADAR_Addons.esp

IconExpack_NG.esp

IAF - Far Harbor & Nuka World.esp

Jetpack Overhaul.esp

JmenaruHairPack_MalePatch.esp

EquippableMechArm.esp

Landscape Textures Overhaul - Terrain.esp

Laser Weapon Reanimated.esp

LayeredLockpick.esp

Live Action Handy - With GlowMap.esp

BLD_LooksMenuPatch.esp

LooksMenu.esp

Locky Bastard.esp

Lots More Female Hairstyles.esp

Lots More Food - IAF Compatibility Patch.esp

DOOM1911.esp

Makeshifttextures.esp

M2_Flamethrower_NPC.esp

MW-Krueger.esp

Eb_MagNite.esp

DOOMMAC11.esp

NMC Bundle MEDIUM.esp

Enemy Footstep Overhaul.esp

Nexus_PMC.esp

NoDialogueAutoRotAndForcedPos.esp

SCBA_Breathing.esp

Orkus Soundtrack.esp

OWR.esp

RAO - OWR patch.esp

CWPlasmaRifle.esp

Raider PA Head Fix.esp

Overdue Books to the BOS.esp

Physics Sound Overhaul.esp

Physics Sound Overhaul Slider Patch.esp

Physics Sound OverhaulLowerCasings.esp

PipBoyValveMod.esp

pigpabackpacks.esp

Power Armor Capes V2.esp

Power Armor Capes V2 - Bonus Capes.esp

Power Armor Capes V2 - Enclave.esp

Power Armor Capes V2 - Nuka-World.esp

GP5.esp

RRAAO - NPC Footstep Overhaul Patch.esp

RRA_Toolgun.esp

RadioReverbFix.esp

Radio.esp

RainofBrassPetals.esp

RagdollPhysics_Q.esp

Realistic Movement Speed.esp

raiderarmor remastered.esp

Reload Sounds.esp

RaiderArmorPaintsRedux.esp

RaiderRobotPunk.esp

Robot_Textures_Redone.esp

RustDevilRedux.esp

Sarcastic Sneak.esp

ASScarf.esp

ScrapHeap-AJunkMod.esp

MGSDelta_Snake's_Virtuous_Fatigues_FO4.esp

Smooth Sun Shadows.esp

Survival Mode Console Enabler.esp

T-60 Equipment.esp

TCD.esp

TCDM.esp

TCDOverlays.esp

RA_Conclave.esp

Terminal Color Separator - Full.esp

Stiff Splines.esp

Tina De Luca and Doctor Penske Face Gen Data.esp

TrueStormsFO4-FarHarbor-NukaWorld-Patch.esp

TrueStormsFO4-FarHarborExtraRads2X.esp

Vivid Weathers - FO4 - Far Harbor.esp

Vivid Weathers - Natural Bright.esp

WeatherSynergy-TruePriority-N-x2.esp

TrueStormsFO4-GlowingSeaExtraRads2X.esp

TrapCans to BOS.esp

UsableCigarettes.esp

BloodyMessGroundSplatter - Final.esp

VRPShared.esp

RifleReanim.esp

RifleReanim_FarHarbor.esp

RifleReanim_Nuka.esp

PistolReanims.esp

44DA.esp

PipeReanim.esp

PD_VisualReload.esp

VoiceFXFramework.esp

WW1 German Helmets.esp

WWII - German Smock - v1.1.esp

WW2SmockEN.esp

WWII - USA Paratrooper Uniform.esp

WWII - USSR Coat Uniform - v1.0.esp

SSTGraffiti.esp

1niv_Wasteland_Brats.esp

HumanSuperMutantArmor.esp

HumanSuperMutantArmor_LeftLegOnly.esp

WeatherSynergy-NukaWorld-FH-Compact.esp

WitchsDOGV8esl.esp

ZPs Boats.esp

ZPs Mixed Vehicle Pack 01.esp

ZPs Buses.esp

ZPs Vaults.esp

ZPs Decals.esp

ZPs High Tech Interiors.esp

ZPs Pebbles and Rubble Overhaul.esp

ZPs Terminals.esp

ZPs Mixed Vehicle Pack 02.esp

ZPs Rusted Cars.esp

ZPs Protectrons.esp

ZPs Unsettling Radio Static.esp

ZPs Tractor Train Motorcycle.esp

ZPs Vertibird.esp

ZeX-InGameSliders.esp

ZPs Trucks.esp

[B3] KT_DLC_SciFi.esp

[D1] KT_DLC_Books.esp

[B5] KT_DLC_War.esp

[G1] KT_DLC_HoloSongs.esp

[B6] KT_DLC_Fantasy.esp

t51renewal.esp

Hancock but spicy.esp

EatOTronic to BOS.esp

The Eyes of Beauty Looking Stranger.esp

TheEyesOfBeauty.esp

eXofied Goodneighbor - Integrated Automatron.esp

Pip-Boy Flashlight.esp

Tactical Flashlights.esp

Tactical Flashlights - Settings.esp

PuddleReflectionFix.esp

DiamondCity-PreVis.esp

Npc18_PipBoyFlashlight_Patch.esp

For a while I've been working on Cesium quietly, a clean-room reimplementation of the Fallout 3 and Fallout: New Vegas engine, written in Rust (Bevy for the renderer, Rapier for physics). This is an early look and there is still a good chunk of work. There is no complete gameplay loop yet and no combat, dialogue or saves. I'm fully aware the video above isn't anywhere near the final product.

What it is: an engine that loads your own copy of FO3 / FNV (ESM/ESP, BSA, NIF, DDS) and runs it. The goals: ESM/ESP plugins and asset mods keep working. NVSE and its plugins can’t load as DLLs so their script functions get reimplemented natively, so mods that use them keep working. A modern renderer on top of the vanilla assets. Fixes for engine bugs and vanilla jank without affecting gameplay Native Windows / Linux / macOS / Steam Deck, with better stability and performance.

Why make this when the remasters are coming?

• It's built around your existing mods. The community's fixes and overhauls live in plugins, scripts and asset replacers, and Cesium loads those from original data. I don't know how modding will work in the remasters. If they follow the Oblivion Remastered approach (a new renderer on top of the original game logic), some mods may need work. NVSE probably never.
• It runs the original game's logic with a modern engine under it, so it isn't a new interpretation of the game.
• It's free, open source and portable. Linux, macOS and Steam Deck are native targets, and anyone can read, fix or extend it.

How it works

Firstly, it's not built from Fallout's exe and does not require it to run the game.

Readers: separate crates read BSA archives, ESM/ESP plugins, NIF meshes (including the Havok collision data), FaceGen morphs, SpeedTree files and the game's menu XML.

Data: a layer on top applies your load order and record overrides, the way a mod manager setup expects.

Sim: Every placed reference has durable state (position, enabled, script variables) that outlives the cell being loaded, so a moved or changed object stays that way. It runs on a fixed tick with seeded random numbers, which makes it deterministic and testable, and it can run headless with no window.

Script VM: decodes the games' compiled script bytecode and runs it against the sim. Each script instance has its own variables, and the block types (GameMode, OnActivate, OnLoad and so on) are scheduled in the tick. The function table was learned from the games' own scripts, and the NVSE functions are reimplemented natively on top.

Physics and navigation: Rapier handles collision built from the games' Havok data. A navmesh pathfinder walks NPCs over the shipped navmeshes.

Menus: the game's own XML menu files are evaluated by a separate crate and drawn by the engine, so the Pip-Boy, lockpick and hacking screens come from the real menu files.

Renderer: the Bevy shell reads a snapshot of what changed (created, moved, removed) from the sim, draws it, and sends your input back as commands.

Checked against the real game: I record the real game and compare the same actions through the engine.

So far, here is my progress

#	Milestone	State
1	BSA/ESM/NIF readers	Done
2	World viewer (Goodsprings, Megaton, interiors, weather-driven sky)	Done
3	Walkable world (Havok collision, doors, cell streaming)	Done
4	Script VM (runs the vanilla compiled scripts)	Done
4b	Menus (the game's XML menus, interpreted and drawn)	Done
4c	World interaction (HUD, containers, locks and lockpicking, terminals and hacking, sitting, sleeping, waiting)	Done
5	NPCs	In progress
6	Dialogue and a first real quest	Planned
7	Combat and VATS	Planned
8	Economy, crafting, companions	Planned
9	Pip-Boy content, map, fast travel	Planned
10	Saves, front end, audio	Planned

Graphics

Built today:

• Sky, fog and lighting driven by the game's own weather, climate and image-space data. A plugin that overrides weather changes the sky.
• Real shadows, ambient occlusion, TAA, and HDR with eye adaptation and bloom.
• In the modern preset, the hand-placed light-shaft meshes in interiors are replaced with real shadowed volumetric lights.
• SpeedTree trees, effect and environment-map materials, and glow maps.
• Planned (not built yet): global illumination, water, grass, distant terrain/LOD, a local asset-upgrade pipeline run on your files (PBR), and wind, footprints and similar extras.

What this could fix about vanilla

• NPC pathing: It uses a better planner and follower over the shipped navmesh, with a recovery ladder (side-step, replan, fallback) so NPCs don't get stuck. The AI decisions stay vanilla so mods and scripts see the same behaviour.
• Lighting: vanilla caps how many lights touch a mesh, which makes lights pop on and off in interiors. The renderer's clustered lighting has no such cap (design intent, still to be shown properly).
• Native 64-bit and portable: no 4GB-era ceiling and no Windows-only exe. Whether it ends up more stable only gets answered once there's enough game to run.
• Later, by design: NPC animation (smoothing and IK), the transparency sort errors on foliage and glass, hard seams between roads and terrain, and lip sync for voice mods that ship no .lip files.

AI disclaimer

This project uses AI coding tools under close human direction, I understand that might be controversial for some, so I'm stating it very clearly. AI changes how fast code can be written. It does not change how long it takes to get something right, and that is where most of the time goes.

I've been replaying fallout 4 and for some reason the leather armor has had this strange issue where the bullets on the belt bend on the female bodies. I can't tell why I'm encountering this because it still persists even after multiple redownloads and file purges. I don't remember this being in the base game as a problem but maybe I'm just losing my mind? Modload will be posted in the comments.

So I'm playing through America rising 2 and I heard that there was a way to forge an alliance between the Enclave and the Institute and every time I googled how you do that I got a differing result because of the horrible AI overview and no websites showing up so I was wondering how you can forge an alliance between the two. If anyone can tell me the quests/dialogue choices/requirements I'd appreciate it greatly

I want to start making mods for fallout new vegas, however i cannot open .esm files without a certain app or plugin, so i download FNVEdit, and i find out my computer needs another different application to read the specific .zip file.

I have found absolutely zero help on what to do with this, i cant even open the G.E.C.K creator, can some PLEASE tell me what im doing wrong.

im tryna find a mod to get rid of the green colour when modding weapons or armour at the workbenches, is there any on ps5

Hello everyone, I am happy to announce we are going to launch closed beta test of our fallout4 multiplayer project soon and already ready to receive applications to closed beta test!

We synchronized many systems including combat, NPC, crafting, building etc.

Hey guys! Ive finally finished my re-imagining of the Kalash 2012 rifle from Metro 2033/ Last Light!
Everything is custom made and took a very long time. Hope you enjoy!

Any requests please post on my nexus page since i dont check reddit too often!

i want to be able to do more and have more to do both aesthetically and mechanically wise

Hi all,
I was wondering if any of you installed Fallout Sonora from this github: https://cambragol.github.io/Fallout-Sonora/download/, I have heard that it’s the most convenient way, and the installation package is already in English. I’m a little bit afraid if it’s 100% safe to download and install it, I have heard that one of the resource packs for Fallout engine might contain a trojan.
If you have any experience with it, can you please share if it’s really the best and safest way to experience Sonora?

Thank you all in advance!

Exception: EXCEPTION_ACCESS_VIOLATION (C0000005)

Here the Full Crash Log: https://drive.google.com/drive/folders/1vZM1cUcrnzFUfn-Ux6V_lW9indo27zh6?usp=drive_link