Valve Quietly Debuts Steam Frame Compatibility Ratings Starting With Portal 2

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Those who have been looking out for Steam hardware-related activity have been closely monitoring SteamDB. It paid off late last night as X user @SadlyItsBradley discovered that Valve's Portal 2 (2011) is the first game to be listed as 'Verified Playable' on the not-yet-released Steam Frame headset. The other game, Valve's Day of Defeat, is marked as Unsupported by SteamOS.

This quiet, low-key move from Valve indicates that the Steam Frame is near finalization and a testing initiative is underway to determine the roster of available Steam Frame games at launch.

Portal 2 is one of the first games that has received a Steam Frame compatibility rating

As a reminder, Steam Frame is able to play x86 Windows builds fully standalone on its ARM SteamOS build thanks to Proton and FEX

Some VR games may work through this emulation/translation too pic.twitter.com/U8wbji4FWg— Brad Lynch (@SadlyItsBradley) June 29, 2026

According...

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