I think its coop becaus eits almost not really as long as the campaign but its similar but with robots in stead of girls.
Asked about 1 year ago in Game Walkthroughs
Games: Portal 2 (X360)
Tags: portal2, portal 2, portal
Both are fantastic but I would say the campaign. Longer = better by the way. Much more humor thrown in... Glados
When I rented Portal 2, I only got to play the campiagn. It was still fun as hell, though.
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