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2007 · Valve · Electronic Arts
Adventure · Platform · Puzzle · Single player · ESRB T
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.
The typical time comes from the diary. Per category, it is the median time reported by people who finished it and, without enough answers, the diary time.
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