A unique take on puzzle gameplay by the makers of Half-Life. Portal is a new type of single player game that changes how players approach, manipulate, and surmise the possibilities in a given environment in a manner similar to how the Gravity Gun changed our approach to how an object may be leveraged in any given situation.
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- Website: http://www.half-life2.com
- Developer: Valve Software
- Publisher: Valve Software
- Type: First-Person/Shooter/Puzzle
- Platforms: Xbox 360/PC/PS3