You need a PC with two keyboard and two mouse ports to have any chance of its hosting multi-players with any chance of success. It is still not a recommended game to play with more than one player at a time.
How many people played portal 2
its called special ops
That depends on what game system you have it for?
you get two profiles on and then go to campaign on coop
Yes, provided you have two controllers and a game with two-player or coop play ability.
You need to buy Portal in order to play the mod Portal: Prelude.
no
yes every level you play single you play coop
you can play mario bros with portal gun online
kaijudo portal kaijudo portal
NO
In order to play the mod Portal: Prelude, you do need to have Portal.
You play as Chell the same as in the first portal and In CO-OP, you can play as two robots named Atlas and P-body
Urm... you just buy Portal 2 from Steam and then play it...
Yes you can play Tenchu Z coop but only for fun and online only.
You can't play coop on Red Dead Redemption or Undead Nightmare.
You play with them.