Waking up in a seemingly empty laboratory, the player is made to complete various physics-based puzzle challenges through numerous test chambers in order to test out the new Aperture Science Handheld Portal Device, without an explanation as to how, why or by whom.
Portal is in our library, but we haven't built its full Sidekick help, Academy lessons, or walkthrough videos yet — those roll out to more of the library over time. In the meantime, the Sidekick already gives live, spoiler-aware help for our fully-built games.
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Waking up in a seemingly empty laboratory, the player is made to complete various physics-based puzzle challenges through numerous test chambers in order to test out the new Aperture Science Handheld Portal Device, without an explanation as to how, why or by whom.