This is a fan made prelude to the massively popular game Portal that I'm sure most of you guys have played. It is a free download, however you do need to already have Portal installed. Just released a couple days ago, I have yet to play it, but will post back with comments ASAP. Anyway, I do know that some of you guys are huge Portal fans, so here's the site:
It's not actually working for me right now, but here's a FilePlanet link:
And for the fastest download, use torrents! I love to see legal use of torrents:
On a side note, Fallout 3 for 360 has been leaked online.