Play Call of Duty: Warzone 1 (Modern Warfare 2019) again in 2026 — Verdansk '84 and Rebirth Island, offline against bots or with friends over LAN.
An installer sets up everything that can be automated and tells you exactly what is left to do.
1. Download this repository Code > Download ZIP, then extract it
2. Right-click install.ps1 Run with PowerShell
3. Follow the prompts
The installer will:
- check your system (7-Zip, RAM, free disk space)
- add the antivirus exclusion — the number one reason installs fail
- create the folder structure and install the configs in the right place
- open the Discord and the build index in your browser
- then watch your Downloads folder and install every file automatically as it lands, including extracting the 77 GB game archive with 7-Zip and flattening it
- create your desktop shortcuts
You download. It installs. Nothing to copy by hand, nothing to drop in the right folder.
Run it again any time — it is safe to re-run and picks up exactly where it left off.
mod/version.dll is included, so that is one less thing to hunt for. The
installer copies it into your game folder automatically.
Check for a newer one anyway. Which game build supports LAN is decided by
that DLL, and it changes between releases. If #mod-dll has a post newer than
12 July 2026, download it — the installer detects it, compares the hash and
replaces the bundled copy on its own. See mod/README.md.
brynhildr.sys is not bundled, on purpose: it is an unsigned kernel-mode
driver that disables an anti-cheat. Take it from the official #ricochet
channel and nowhere else. The installer picks it up from your Downloads folder.
The mod DLL is bundled. The rest is not, and cannot be: it is either Activision's, the mod authors', or another author's work. The installer checks for each one and points you at the right place.
| File | Size | Where |
|---|---|---|
Game files, build 1.44.0.10435696 |
~77 GB | Build archive channels on Discord, or codbuilds.github.io |
version.dll |
~34 MB | ✅ bundled in mod/ — only grab a newer one if #mod-dll has one |
_StartGame.bat + brynhildr.sys — loader |
~2.5 MB | Discord, #ricochet |
Bots.gsc — offline bots (optional) |
~3 KB | Discord, #community-extras — by RyGuy2Cool |
| 7-Zip | — | 7-zip.org — the Windows extractor corrupts the game's files |
| Radmin VPN (only to play with friends) | — | radmin-vpn.com |
Discord: discord.gg/WVSErUvBbj
The game is 84 GB once extracted. GitHub caps files at 100 MB. That is why this repository is a toolkit, not a download.
| Build | Era | Maps | Networked play |
|---|---|---|---|
1.44.0.10435696 |
Cold War S6 Reloaded — Oct 2021 | Verdansk '84 + Rebirth Island | ✅ |
1.64.5.13113888 |
Vanguard S5 Reloaded — Nov 2022 | Caldera + Rebirth + Fortune's Keep | ❌ |
1.67.x |
Warzone Caldera — 2023 | Caldera + Rebirth | ❌ |
The mod version decides which build supports networked play, and it changes between releases. The DLL published on 12 July 2026 states plainly: LAN IS ONLY ON VERSION 1.44.
Check the #mod-dll channel before downloading 77 GB. The official docs site listed 1.41.2 / 1.60.0 / 1.64.5 — that list was out of date.
Console key is the one below ESC (` on QWERTY, ² on AZERTY).
exec rebirth.cfg from the main menu
Then click PRIVATE MATCH & PRACTICE and start the match. Once you are in the match:
botdifficulty 2 0 recruit · 1 regular · 2 hardened · 3 veteran
addbot 20 add 20 bots
Bot commands only work in a match. From the menus they do nothing.
There is no matchmaking — the official servers are gone.
1. Everyone installs the SAME build and the SAME version.dll
2. Everyone joins the same Radmin VPN network
3. One person hosts a private match, the others join
Find players in #lan-method on the IW8-Mod Discord.
The menu caps at 120. cg_fovScale multiplies on top:
cg_fovscale 1.34 = 160
cg_fovscale 2.00 = 240 (maximum)
tools/Warzone1.ps1, with a desktop shortcut created by the installer.
1. Launch the game
2. In-game commands (cheat sheet)
3. Health check - is everything OK?
4. Restore my settings
5. Troubleshooting - the usual suspects
6. Useful links
7. Open the game folder
Option 3 checks in one pass: game, mod, loader, bot script, configs, when settings were last saved, Radmin VPN, and free disk space. Green means go.
| Symptom | Actual cause | Fix |
|---|---|---|
| Black screen when leaving a match | The game is waiting on Activision's servers, dead since 2023 | Wait 30–60 seconds. Not a crash — the process sits at 0% CPU and then resumes |
Crash at end of match (VERSION.dll+0x...) |
The crash is inside the mod. NVIDIA Highlights and screen recorders hook the same end-of-match event | Turn off NVIDIA Highlights, close Medal/OBS, look for a newer version.dll |
| Settings lost | The game could not write its config | Control Center → option 4. The launcher also backs up on every start |
Unable to initialize online services |
Radmin VPN not connected | Start Radmin and join the network |
Incorrect DLL |
Pre-cracked or pre-modded build | Use a clean build. A Launcher.exe in the game folder means the build is bad |
Error 6164 / 6036 / disk read |
Corrupt extraction | Re-extract with 7-Zip |
Error 6345, missing files |
Antivirus ate a file | Add the exclusion, reinstall |
| Game closes on launch | Ricochet driver not running | Run the launcher as administrator |
The settings folder is versioned. The game does not write to Documents\Call of Duty Modern Warfare\. It writes to:
Documents\Call of Duty Modern Warfare (1.44.0)\players\
Put your .cfg files anywhere else and you get no error — just no effect. The installer handles this.
Setting names are hashed. config.cfg looks like this:
setcl 30049418 "140"
setcl -1457215672 "Low"
tools/compare-config.ps1 diffs two snapshots so you can work out which ID is which: change one setting, quit, diff, and the single ID that moved is yours. A few already decoded:
| ID | Setting |
|---|---|
-166510421 |
Field of View |
1650431234 |
Screen refresh rate |
-1492172900 |
Display mode |
1847523626 |
NVIDIA Reflex |
-1457215672 |
Shadow map resolution |
1607162157 |
Ambient occlusion |
-1534246785 |
Deferred physics |
834974127 |
Anti-aliasing |
Also useful: com_maxfps does not exist in this build, and the r_* graphics variables are obfuscated (r_0A, r_Bb…). Use the menus for those.
See reference/settings-250fps.md for the full sheet.
At low settings this game is CPU-bound. Lowering textures achieves nothing. What matters:
| Setting | Value | Why |
|---|---|---|
| On-demand Texture Streaming | Disabled | The number one cause of micro-stutter |
| Cache Spot Shadows | Enabled | The largest single frame rate gain available |
| Cache Sun Shadows | Enabled | Same |
| Shadow Map Resolution | Low | CPU cost |
| Ambient Occlusion / SSR | Disabled | Expensive, invisible in a fight |
| Particle Quality / Lighting | Low | CPU cost |
| NVIDIA Highlights | Disabled | Known crash trigger with this mod |
- You are expected to legally own Call of Duty: Modern Warfare (2019). That is also the IW8-Mod project's stated position.
- The mod's loader registers an unsigned kernel driver. Only ever get it from the project's official Discord.
- The mod ships as a public test branch (
fc78351a-dirty). Crashes are part of the deal.
| IW8-Mod Discord | discord.gg/WVSErUvBbj |
| Official documentation | docs.iw8.dev |
| Command reference | atu-atlas.github.io/MW |
| Build index | codbuilds.github.io |
xifil and luxploit (IW8-Mod) · purrplee, .r4v3n (mod and LAN) · RyGuy2Cool (GSC bots) · atu (Atlas reference) · illuminate, Delta, elbasedd (build archive)
Not affiliated with Activision, Infinity Ward, or the IW8-Mod project.
MIT — see LICENSE.