Portal Review

Portal is perhaps one of the most ingenious games I have ever played. The game centers around the Aperture Science Handheld Portal Device(ASHPD) or the portal gun, which shoots linked portals. This concept seems relatively simple, until you realize all the complications that go into two linked spaces. Momentum is not affected by these portals, objects can fly through them, and they travel slow enough for some crazy portal-through-portal tricks.
In the game, you play Chell, a misfortunate woman trapped in an Aperture Science testing facility for the ASHPD. As you advance through the stages, you are guided by a supercomputer named GLaDOS(Genetic Lifeform and Disk-Operating System), whose darker side is slowly revealed to the player. She vaguely hints to the player about the end of the test, which may or may not end very, very badly.
Portal, while only about two hours long, has very high replay value, as it can take several goes through the whole game to truly think with portals. One neat thing I try to do is a speedrun of Portal, using the "ninja method" to fly through test chambers in a fraction of the time it would normally take. This often involves using momentum to your advantage, flying through one portal and coming out the other one to cleanly hop on to a platform.
Yahtzee of Zero Punctuation probably does a better review of Portal than I do, but lacking an endless supply of wit, I simply provide you with the raw facts.