What game was my friend talking about?

A few days ago my friend recommended a game to me, I can't remember what it was and I haven't been able to contact him to ask what it was, I was hoping someone could help me.

Apparently each level is in a room, where you basically use physics/science to make a portal to move you onto the next level, presumably solving a puzzle of some sort. Apparently the end is something fantastic and he wouldn't tell me what since that would spoil it, apparently.
I think the name began with a P...

I know that's not much to go on, but does it sound familiar?

raggedjimmi said:

Oh that's more than enough to go on!

The game is called Portal. It's a game developed by Valve for Windows and it's bloody brilliant. It's available on the Steam store either on its own or as part of a collected called The Orange Box - which is probably the 5 best games in existance in a fairly cheap bundle.

Click to expand...

Wow, did I just type the name of the game without even realising it... don't I look silly

It's windows only then?
Any idea if it'd play fine in Parallels on a Quad 2.66Ghz Mac Pro with 7GB RAM?

Thanks for the help