Free Portal for Steam users!

It's been around four years now since this game was release so you're bound to have heard of it and maybe even own a copy. If not then this is your chance to get it for absolutely free! The reason behind this is that Portal/Portal 2 is now being used in some classrooms to help teach physics, maths, logic, problem-solving skills and spatial reasoning. I don't know about you but I am really jealous of these pupils that get to play Portal in class, I had to learn all these things the boring way.. And I'm a visual learner so this would have been of great help to me. If you for some reason don't know what Portal is then here's a trailer..

Anyways as I said, this game is now free from Valve's website, the download page is here. It is only free until the 20th of September so go go go and download and have fun!