Welcome to the Aperture Science Enrichment Center. One the test is over, you will be baked [Garbled words] cake.
Anyway, Portal is one of the games that comes with the Orange Box. It's best called a first-person puzzle game, as while it uses the same engine as Half-Life 2 and Counter-Strike, the only weapon you have is your trusty Portal Gun (NOTE: Do not submerge in water, even partially) and your not-so-trusty brain.
I'll throw some screenshots up later, but at its basic level Portal is about getting from Point A to Point B. But normally this would be impossible, but not with your Aperture Science Enrichment Center Handheld Portal Device. The game itself is only 19 Test Chambers, but that's not counting the Bonus Maps, Challenges, ending levels and, of course, user-made maps.
Now for the plot:
You play as a test participant (willing or unwilling is unknown) named Chell Johnson. Yes, it's a woman. I'd like to say this: NO SHE'S NOT AN ANDROID OR COMBINE. THOSE THINGS ON HER LEGS KEEP THEM FROM BREAKING AFTER EACH FALL. Anyway, Chell is much like Gordon Freeman in that she never says anything. But that doesn't mean Portal doesn't have personality. That comes for the AI giving you directions, GLaDOS. Some of the things she says are hilarious, especially
the ending song. You're promised cake at the end of the test, but the scribblings on the walls from previous test participants tell a different story...
I can't be the only one loving this game on NWR.
YouTube trailer link