Questions answered by dark788

Yeah valve said that their games are compatible

Left Click to make a blue portal Right Click to make a orange portal

Yup email or on the contest page

Well it depends how good you are at solving the puzzles a average gamer i guess 5-7 hours coop 3-5 h...

A pc,ps2,gba,n64 and a ds my favourite is PC :D go on it everyday!

You cant play coop with a computer you can play with a friend or a random person

nope portal 2 was released you could get portal 1 for free if you preoredered portal 2

No only Pc and PS3 can coop

Wait for the portal 2 SDK it will be awesome !

No you cant change your login name of steam you can change you community profile tho.

If you bought the ps3 or pc version yes ps3 works with steam xbox doesent tho

After you get the portal gun that has the blue portal keep advancing in the game you will get it lat...

Yes you can but not in-game you have to use new game and select that level or load a save game that ...

ARG means Alternate-Reality-Game Portal 2 just had one to promote it

No you need two separate steam accounts to play coop

I would say single player campaign so you know how to use the portal gun,etc

Your charactor has too stare at it not you! Silly!

around 30-40 dollars not the full price

It will find someone for you but you can invite a friend

I dont have portal 2 but from the looks of it coop is AWESOME