SourceVR (Half-Life 2 & Portal VR)

Native standalone Valve Source Engine port for Meta Quest. Play Half-Life 2, Episode 1, Episode 2, Lost Coast, Portal, and Portal 2 in full 6DoF VR without PCVR.

Tracking
Yes, 6DoF
Motion controls
Yes, 6DoF motion controls (Half-Life 2)

Locomotion

Smooth Locomotion
Snap Turn
Roomscale

Play modes

Roomscale

Headsets

Quest 2
Quest 3
Quest 3S
Quest Pro

No Quest connected

1Step 1: Install Port APK

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Buy Base Game (Steam)

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Manual APK Download (GitHub Releases)

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Verification

Not tested

Headset verification status for this port, including Quest Pro and headsets that have not been tested.
Headset	Status	When	Source
Quest 2	Not tested	—	—
Quest 3	Not tested	—	—
Quest 3S	Not tested	—	—
Quest Pro	Not tested	—	—

Step-by-Step Installation Guide

Install on Quest, in the card above, is the one-click USB install. These steps are the manual path (SideQuest or ADB).

Prerequisites

Meta Quest 2, 3, 3S, or Pro with Developer Mode enabled.
Original Half-Life 2 (and optionally Episode 1, Episode 2, Portal) on Steam.
SideQuest or Android ADB (platform-tools).

Step-by-Step Installation

Download the latest standalone Quest APK (SourceVR-0.1.28.apk) from GitHub Releases.
Install the APK to your Meta Quest via SideQuest or command line: adb install -r SourceVR-0.1.28.apk
Launch SourceVRPort once from App Library → Unknown Sources on your headset and grant file permissions.
Locate your game installation folders on PC:
- Half-Life 2: Steam/steamapps/common/Half-Life 2/
- Portal: Steam/steamapps/common/Portal/
Copy the game content folders to your Quest storage under /sdcard/SourceVRPort/common/:
- For Half-Life 2: copy hl2 and platform
- For Episode One: also copy episodic
- For Episode Two: also copy ep2
- For Portal: copy portal (uses shared hl2 content)
Put on your headset, open SourceVRPort, choose your game, and hit Play once the content check reports ready!

Supported Games in One Hub

Half-Life 2: Full 6DoF motion controls, weapon wheel, interactive vehicles (airboat & buggy).
Episode 1 & Episode 2: Full campaign continuity and flashlight tracking.
Lost Coast: High dynamic range showcase chapter.
Portal: Hand-tracked Aperture Science Handheld Portal Device.
Entropy : Zero: Community campaign support.
Portal 2: Experimental testing build.

Troubleshooting & Tips

Steam legacy files work out-of-the-box. Ensure you copy the required folders into /sdcard/SourceVRPort/common/. Custom content mods can be placed in /sdcard/SourceVRPort/common/hl2/custom/.