"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." -Valve
Official Website (ValveSoftware); https://www.valvesoftware.com/en/
Online Store (Steam); https://store.steampowered.com/app/400/Portal/
Product Review; "Portal hit mega popularity when it first released for it's ingenious gameplay dynamic and highly polished level design. Using a dual-portal gun, you fire upon a flat surface and crawl in to solve puzzles and get your character free from GLaDOS' 'mad-scientist'-esque testing facility. A thrilling and intriguing single player campaign and some advanced challenge chambers, but unfortunately multiplayer was not added until the sequel. Everyone has heard of Portal, but if you've never played it - there's no better time!" -MadeInUSAReview
