Valve considered creating a new VR game for the Steam Frame headset but ultimately chose to port Half-Life: Alyx to standalone mode instead. The decision prioritized ensuring existing Steam catalogue compatibility and using Alyx as a testing ground to identify performance optimizations and driver fixes applicable across Frame games. Knowledge gained from this process is now being shared with developers through the Steam Frame Verified programme.
Valve ported Half-Life: Alyx to Steam Frame, a standalone ARM-based VR headset, despite initial skepticism that it was impossible. Engineers overcame fundamental GPU architecture differences and spent 18 months optimizing drivers and the SteamVR stack, with foveated rendering and eye tracking proving crucial to the project's feasibility. The port's primary value lay in stress-testing Valve's software stack for the new hardware rather than as a commercial product.