http://store.steampowered.com/freeportal/
It says until May 24th but I don't know if that means you can't play it after the 24th or if you get to keep it but everyone else would have to pay for it.
Either way, it's free right now and I REALLY suggest it. Note that you do not need to use a credit card for this, you just need a steam account (which is also free).
The bad thing about this is that Mac fanboys will be all like "we have games now" but they obviously miss out on Games for Windows Live (which is like XBox Live but for PC), they can't use 360 controllers and Apple essentially says "Screw You" when it comes to upgrading your parts for your computer (instead they want you to get an entirely new computer)
It says until May 24th but I don't know if that means you can't play it after the 24th or if you get to keep it but everyone else would have to pay for it.
Either way, it's free right now and I REALLY suggest it. Note that you do not need to use a credit card for this, you just need a steam account (which is also free).
The bad thing about this is that Mac fanboys will be all like "we have games now" but they obviously miss out on Games for Windows Live (which is like XBox Live but for PC), they can't use 360 controllers and Apple essentially says "Screw You" when it comes to upgrading your parts for your computer (instead they want you to get an entirely new computer)