Portal Video Game

• GameFAQs: Portal  - Contains walkthroughs, answers to frequently asked questions, and cheat codes.
• Gamespot: Portal  - Shows screenshots, consumer reviews, and articles about the puzzle game.
• GameSpy: Portal  - Contains a strategy guide for the game that is bundled with the Half-life Orange Box collection.
• IGN: Portal  - Shows cheats, a guide, FAQs and reader reviews about the game that lets players shoot portals on walls and floors to solve environment puzzles.