This item has been removed from the community because it violates Steam Community & Content Guidelines. It is only visible to you. If you believe your item has been removed by mistake, please contact Steam Support.
This item is incompatible with Portal. Please see the instructions page for reasons why this item might not work within Portal.
Current visibility: Hidden
This item will only be visible to you, admins, and anyone marked as a creator.
Current visibility: Friends-only
This item will only be visible in searches to you, your friends, and admins.
Not enough ratings
Portal - Walkthrough
Portal is a 2007 first-person puzzle-platform video game. The game consists primarily of a series of puzzles that must be solved by teleporting the player's character and simple objects using "the Aperture Science Handheld Portal Device", a device that can create inter-spatial portals between two flat planes. The player-character, Chell, is challenged and taunted by an artificial intelligence named GLaDOS to complete each puzzle in the Aperture Science Enrichment Center using the portal gun with the promise of receiving cake when all the puzzles are completed.