[SkinnyPupp]

Now is your chance to stop being dumb. It's FREE this weekend! Go get it off Steam (http://store.steampowered.com/app/400/)

[jerche]

It is free until Tuesday. I downloaded mine already

Apparently they want it to become an educational tool to teach physics etc.

Here's the article.

Portal free until September 20 - News at GameSpot (http://www.gamespot.com/news/6335140/portal-free-until-september-20?tag=updates%3Beditor%3Ball%3Btitle%3B9)

[BossFrancis]

I tried it at a friend's house before. Too confusing for me:okay:

[_Hotsauce_]

^Sorry to hear you lack basic problem solving skills, go jump off a bridge! Oh wait, can you figure out how to do that?

[Zyzz]

video games are such a waste of time

[taylor192]

Is the game only free till Sept 20, as in it will lock and be unplayable after that date if I install it?

[Berzerker]

Good Question lol. Never thought of that. Looks like the full version so I don't think they can do that though.

Berz out.

[ChaKo]

Is the game only free till Sept 20, as in it will lock and be unplayable after that date if I install it?

there's no mention of a cutoff date on the learn with portals site that is linked from the steam page:
"Download a FREE copy of the original Portal for your PC or Mac here:" - this link takes you back to the same steam page to download the game.

[jerche]

It is free forever, you just have to download it before the 20th.

[twitchyzero]

the last time it was free it stayed in your steam list after the offer expired