Portal is a first-person puzzle game. Players must solve physical challenges by opening portals to maneuver objects, and themselves, through the enigmatic Aperture Science Laboratories.
Some more Behind the Scenes themed areas, because apparently, I'm addicted to Portal 1's Aperture. The portal gun (conveniently placed at the Lobby) is required to access some parts of the map but overall, it's non-linear and doesn't have an ending. Feel free to explore for as long as you wish. To install, copy the contents of the Enrichment Center Offices 2 zip (A maps and a Materials folder) in your portal folder (It should also have maps and a Materials folder in there) , launch the game and choose the map from the Bonus Maps option on the main menu.
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I think this is a very good mod, especially for the most "casual" Portal players. Good job!