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Portal cover art

Portal

Deck VerifiedActionOct 10, 2007Valve
Online once to activate

Steam lists no extra DRM or account for this game. Install and sign in to Steam while online once, then switch Steam to Offline Mode.

Buy on Steam $9.99

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Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.

Offline details by store

StoreStore flagsOffline statusWhat that meansSource
SteamNone listed Online once to activate Steam lists no extra DRM or account for this game. Install and sign in to Steam while online once, then switch Steam to Offline Mode. Steam store page

Statuses are read from each store's own information, not tested by us, and can change with patches. Check the store page before you buy. How we decide. Steam Deck rating from Valve's compatibility report.

Last data refresh: October 26, 2026.

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