Portal is a great game that comes in the "Orange Box" collection. It is an interesting puzzle game that forces you to think with portals. This game is sure to raise the bar in computer games since it uses a new feature, that of creating an entrance and exit portal. This central feature to the game uses the Source physics engine and is sure to make first-person shooters step up to use this new technology. The game is fun and creative, since every puzzle can be solved a number of different ways. Furthermore, the story is also fun, deep, mysterious, and interesting and plays into the well-known Half-Life 2 storyline. Players will be sure to appreciate the dark humor of the game.
The game comes with bonus levels after you've beaten the game once, making this game a valuable addition to the "Orange Box" collection.