Portal Steam Altergift
| Platform: | Steam |
| Languages: | GERMAN, ENGLISH, FRENCH, SPANISH, DANISH, DUTCH, JAPANESE, POLISH, PORTUGUESE, RUSSIAN, SWEDISH, CHINESE, FINNISH, NORWEGIAN, KOREAN, ITALIAN |
| Regions: | REST OF THE WORLD |
| Genres: | ADVENTURE, FPS, PLATFORMER |
| Developer: | VALVE CORPORATION, VALVE CORPORATION |
| Release date: | October 10 2007 |
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.
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