What works so far

Peers move, sprint and turn in live sessions.

Validated in game by owner report on 2026-08-03.

Validated in game by owner report on 2026-08-03.

Validated in game by owner report on 2026-08-03.

Validated in game by owner report on 2026-08-03.

Validated in game by owner report on 2026-08-03.

Confirmed in game on 2026-08-20: outfits show correctly for both players, including different character sexes.

Confirmed in game on 2026-08-20: face and body appear correctly for peers, including different character sexes.

Tried in game on 2026-08-06 and the engine refuses to play it on another player's character. Parked for a later polish pass; a nametag already shows who is in their Pip-Boy.

Validated in game by owner report on 2026-08-03.

Read-only probe is built; occupancy, ownership, mirror suits and fusion-core sync are not.

Names, levels, health and rads render over peers; head-bone anchoring fixed height bob.

Validated in game by owner report on 2026-08-03.

Server routing and the Pip-Boy model writer are built; whether the icon appears is untested.

Health, rads and level are replayed on interest changes and resync periodically.

Validated in game by owner report on 2026-08-03.

Player shots are captured and replayed; dry-click shadow shots are fixed.

Validated in game by owner report on 2026-08-03.

Confirmed in game on 2026-08-20: melee, armed and unarmed, replays correctly for peers.

Confirmed in game on 2026-08-20: gun bash replays correctly for peers.

Confirmed with two players on 2026-08-07: shooting another player hurts them. Before this, one player's gun could do nothing at all for a whole session.

Protocol and authority routing are built; the recent fix still needs a live validation pass.

NPC attacker damage is reported and applied to remote players.

Confirmed in game on 2026-08-20: grenades and thrown weapons replay correctly for peers.

Confirmed in game on 2026-08-20: explosions from replicated projectiles apply correctly for every observer.

Confirmed in game on 2026-08-20: downed state works for individual players and for a fully downed party.

Confirmed in game on 2026-08-08: after bleeding out you get back on your feet on solid ground a short walk from where you fell. The earlier run that left you hanging in the air is fixed.

Confirmed in game on 2026-08-20: reviving a teammate, including the stimpak and downed pose, works correctly.

Confirmed in game on 2026-08-20: NPCs fairly split aggro and combat targeting across the party.

Settlers and companions defending every player is not implemented yet.

Confirmed in game on 2026-08-20: kill cameras stay suppressed in a connected session.

Confirmed in game on 2026-08-20: ambient NPCs move smoothly, with no facing snap or stalling.

Confirmed in game on 2026-08-20: matching NPCs are adopted and missing NPC replicas spawn correctly.

Template ancestry fallback is validated for adoption; true spawn cleanup is still open.

Quest alias actors now pose-sync, but the session will not kill or resurrect them.

Equipment rides roster entries and applies after 3D is ready; spawned presentation still needs coverage.

Roster condition sync is built for health and WorkshopActorWounded; not run in game.

Life-state apply for unconscious actors is built and idempotent; not yet validated.

Confirmed in game on 2026-08-20: NPC and turret gunfire, including muzzle flash and sound, reaches every peer.

Confirmed in game on 2026-08-20: NPC corpses come to rest in the same place for every player.

Confirmed in game on 2026-08-20: what a corpse carries matches for every player.

Lost limbs, and bodies vaporised by energy weapons, are not carried to the other player. Gear on a body that was already dead only partly matches.

Validated in game by owner report on 2026-08-03.

No separate random-encounter system is planned; those actors should ride the ambient NPC roster.

The mod dismisses followers by default; recruited companion sync is not built.

A nametag names who is with that player, and another player's cell no longer drags your own companion around. Built, not yet validated in game.

The Lone Wanderer companion-global bridge is built; not validated in game.

Ordinary doors relay end to end. A door that loads a new area is deliberately left alone, because syncing one could hang the other player.

Two players walking into the same building together used to leave one of them stuck on a black screen. Fixed and confirmed in game on 2026-08-07.

Lock state converges through the world mutation path.

Open-state relays for ordinary world refs are validated.

The message and the server rule are built, but the allow list ships empty and the receiver does not replay yet, so nothing is shared in game today.

Reaching a result through a terminal (like unlocking a door) is built but switched off until a two-player run confirms it works; enabling it early crashed the game once, since fixed.

Server-created refs now enter open-state sync; flip-a-pylon validation is next.

Durable snapshots and transactions are server-owned.

Open container menus repaint when another player changes the contents.

Seeding unresolved leveled lists can publish generator forms; the safe baseline needs a live run.

Static placed loose-item removal is durable and replayed on cell entry.

Runtime object identity lets dropped items survive outside the first occupied cell.

Containers and dropped items now carry each item's attached mods, so a legendary weapon is not a plain one for everybody else. Built and merged, not yet seen in a live game.

Carried-object physics has the pause-resume fix from 2026-08-03.

Server save stores creations, removals, open state and container state.

Replay works after entry; the true pre-presentation load hook is still unidentified.

Respawn-cell contents are not reconciled yet.

Confirmed with two players on 2026-08-07: picking a plant shows for the other player. Settlement crops, and plants growing back, are not confirmed yet.

Cars are in sync while both players are there. Other breakable things, and anything destroyed before you arrive, are not confirmed yet.

Confirmed with two players on 2026-08-07: a car takes damage and blows up the same way for both of them.

Weather form and blend synchronize in game.

GameHour synchronization is validated in game.

GameDay, GameMonth and GameYear are not synchronized yet.

Whether a mine is armed or disarmed reaches other players; disarming one is confirmed safe in game, but running through one too fast can still set it off (2026-08-15). Fix built, unconfirmed.

Quest-flagged refs are protected, but scripted event replication is not built.

Placement syncs in a live session, including objects across settlement cell boundaries.

Workshop-built objects and plugin-placed clutter scrap in sync.

Validated in game by owner report on 2026-08-03.

Linked ref and HandleCreation are built; generator-alone validation is next.

HandleCreation should reach the build budget and ratings; the effect is unvalidated.

Built to hide singleplayer-only builds that the server never saw; not run in game.

Placement, scrapping and peer cable presentation are all confirmed in a live two-player session, along with power transfer over the wire (2026-08-05, 2026-08-13).

Endpoints and spline rendering (wire thickness) are confirmed in a live session, along with power transfer. Disconnecting an existing wire is a separate, still-unconfirmed path.

Wire power transfer confirmed in game on 2026-08-13: a light and a switch on a power grid worked for both players, operable from either side.

A replayed generator starts visually off, with no motor sound or smoke, even though it is providing power. Root cause is now diagnosed; the fix is designed but not yet written or tested.

One workshop switch and light, wired to a power grid, is confirmed working and operable from either player (2026-08-13). Other switch and light types are not yet confirmed.

Resource totals, happiness and assignment state are not synchronized yet.

Workshop NPC job scripts are not synchronized.

Aim, health and unconsciousness are built through actor roster paths; no game run yet.

Reuses furniture occupancy claims; suit-specific apply and ownership are not built.

The probe ships on by default so real quest churn can be measured.

QuestProgress, store, ordering and persistence are built; no game validation yet.

A query and debug panel can show stored party quest state.

No remote stage is applied yet; phase 2 requires per-quest opt-in.

Session-wide global sync is built with a deliberately empty allow list.

Config and data extraction exist; live probe data still needs to fill the list.

Dialogue remains private by default; no one is force-advanced.

Quest refs and quest-object inventory stacks are excluded from world sync paths.

The game opens the browser flow and receives the session back.

Fixes a bug where players without a personal id looked identical to the server, so joining could bump an earlier player out by mistake. Built end to end, not yet confirmed in a live session.

Kernel requires a browser captcha, so the in-game password forms were removed.

The site can rename through kernel and refreshes the local profile.

Search, request, accept, deny, cancel and unfriend are built.

Global, party and nearby channels. Confirmed with two players on 2026-08-07.

Confirmed in game on 2026-08-06: the marker sits on the spot you pointed at, carries who placed it and how far away it is, and shows on the Pip-Boy map.

The event stream makes a player online and closes cleanly when the client dies.

Shows server activity, but presence server ids remain client-reported.

Owners can claim and heartbeat servers; public listed servers appear on the site.

Owners can list, claim, rotate, move and remove their servers.

Staff can suspend and reinstate without leaking suspension state to owners.

Public announcements can be edited without a deploy and shown before sign-in.

Public social links are keyed, sanitized and shown on the site and in game.

Curated rows live in the database and can be edited from admin content.

Returns name, description, tags, slots, icon, ping and compatibility without joining.

Validated in game by owner report on 2026-08-03.

Icons are real PNG files and absolute paths; in-game browser display still needs final validation.

A full server refuses extra clients with a defined QUIC close code.

Servers sign a fresh query challenge with an Ed25519 key.

Local history uses proven server keys; the session-start identity fix just landed.

A save records the servers it has joined, and joining a different one asks first. Built, not yet run in game.

Backend and client sync exist; the session-start identity fix needs production proof.

Uses the larger of local and account totals; depends on proven key discovery.

Listed servers have public detail pages; private details stay owner-only.

Heartbeat samples keep 15-minute peaks for the server detail chart.

The registry returns an address only for joinable servers; private ids stay hidden.

Works when Fallout 4 is already running; launching the game from an invite is unsupported.

Discord request path is plumbed, but there is no production UI prompt yet.

A password opens an in-game admin menu whose commands come from the server, including teleports. Confirmed with two players on 2026-08-07. Admins by account are not built.

A free, friends-only hosted server: no port forwarding or always-on machine needed. Account pages exist, but creating a server does not fully work yet; hosting-side gaps block it from starting.

Friends, servers, account and controls live in one RmlUi panel.

Shows sign-in state, friends, requests and profile data in game.

Direct and registry server browsing is built; final in-game rendering pass is still open.

Every mod key is listed in one place and can be changed from the panel.

Bindings round-trip through the TOML client config with conflict reporting.

Escape capture hold is built to stop pause-menu bleed-through

One key hides this mod and the game HUD, validated in a running game.

Confirmed in game on 2026-08-20: the world keeps running for other players no matter which menu is open.

The main menu shows account state, announcements and social links.

Invite toasts keep their own RmlUi surface alive and draw above the panel.

RCSS alpha and font-weight traps are covered by project checks.

Done by owner report on 2026-08-03.

Done by owner report on 2026-08-03.

Done by owner report on 2026-08-03.

Crash reports send end to end; the backend is confirmed working (2026-08-16). Reports now name the crashing function instead of a bare address (2026-08-17). Not yet turned on for players.

fop-save-inspect can read the server save and confirmed live settlement records.

The dev script launches both game instances and seeds probe keys.

Done by owner report on 2026-08-03.

fop-query exercises the same direct query protocol as the browser.