Left 4 Dead 2
Hold the shotgun yourself and defend a safe room with friends, using the mod that Portal 2 VR is built on.
The catch: Upstream repo went quiet in 2025 and the active build is a fork.
Will it run on your rig?
Check my rig
Set your rig to check fit.
Launch Kit
Get Left 4 Dead 2 running
Steps are general until you ; then the runtime step matches your headset.
-
Set your VR runtime
This mod runs through SteamVR. Start your headset's PC link first (Quest Link, Air Link or Virtual Desktop), then start SteamVR.
General step from us -
Install Left 4 Dead 2 (Steam)
Install it and launch it once in flat mode to finish first-time setup, then quit.
General step from us -
Have these ready
Left 4 Dead 2 on Steam · SteamVR running · Launch options from the README
From the creator's guide -
Creator step 1
Download L4D2VR.zip from GitHub releases
From the creator's guide -
Creator step 2
Extract it into the Left 4 Dead 2 install folder
From the creator's guide -
Creator step 3
Launch SteamVR, then start the game with the README launch options
From the creator's guide -
Creator step 4
Join or create a campaign
From the creator's guide -
Creator step 5
Press down on the left stick to recenter height
From the creator's guide -
First launch in VR
Put the headset on, then start Left 4 Dead 2 the way the creator's guide says. Calibrate your height in the first area.
General step from us
Stuck?
Interactions and throwables need aiming with your face except on VR-only servers
Reported on the creator's page or the linked sources. Known issue
README warns of VAC ban risk; use -insecure
Reported on the creator's page or the linked sources. Known issue
Versus mode barely tested
Reported on the creator's page or the linked sources. Known issue
Black screen in the headset
This mod runs through SteamVR. Start your link (Quest Link, Air Link or Virtual Desktop) first, then SteamVR, and only then the game. If SteamVR shows the headset but the game is flat, close the game and launch it again the way the creator's steps say. General tip from us
Controllers don't show up
Start Link, Virtual Desktop or SteamVR before the game, and make sure the controllers are awake before launch. General tip from us
Stutter or low frame rate
Lower the in-game resolution or render scale first, then shadows and volumetrics. Close overlays you don't need. General tip from us
The mod didn't load at all
Recheck the game version against the creator's page; a game update is the most common cause. Then reinstall the mod files. General tip from us
Prefer a guide that talks back?
Copy a prompt for Claude Code on your PC. It asks before every download or change, and only uses the official page.