Do you have to have internet to get Portal 2?

Question

MY mom says no Portal because you have to play it online. I know that's not true but where can I find theproof to show her? She said you have to download it from a whole comunity thing or whatever, when I know you can get it through Steam. But how?

Answer 1

well if you go on steam and scroll down to About the Game, and under that Product Features, it says Extensive single player: Featuring next generation gameplay and a wildly-engrossing story it also talks alot more about single player there.

and if you want to prove to her that you can buy it through steam, you can just go to the store page and click ADD TO CART and you can show her that you can buy it just like that