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This is your portal to solving the puzzle of gift giving... even if that gift is for you! All you need to do is roam through this superb selection of key chains, lunch boxes, signs, patches, prop replicas, phone accessories, and other toys and collectibles fresh from the labs at Aperture Science to find what you want. It's that easy!
Portal is a single-player first-person puzzle-platform video game developed by Valve Corporation. The game primarily comprises a series of puzzles that must be solved by teleporting the player's character and simple objects using "the handheld portal device," a device that can create interspatial portals between two flat planes. The player-character, Chell, is challenged by an artificial intelligence named GLaDOS (Genetic Lifeform and Disk Operating System) to complete each puzzle in the Aperture Science Enrichment Center using the portal gun.