Steam Deck

Does Cepheus Protocol work on Steam Deck?

Steam Deck

Playable

This game runs on Steam Deck, but with caveats. You may need to bring up the on-screen keyboard yourself, or adjust settings.

Status as checked with Valve on 6 November 2026.

Find patient zero before an alien virus takes over San Francisco and the cepheus protocol is enacted.

System requirements

Does Cepheus Protocol work on Steam Deck?: Playable. This game runs on Steam Deck, but with caveats. You may need to bring up the on-screen keyboard yourself, or adjust settings.

Cepheus Protocol

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