I haven't even tried multiplayer as I've heard the terrible things about the servers; however, this game is 100% worth it just based on the campaign. I bought the game for $3 during last years summer sale and just now got around to playing it and I can't believe it took me so long this game in now on my favorites list and up there with the 2 portal games!

Just as good as the first game if not better in terms of story, however, some of the puzzles took me a little too long to give a 5 out of 5 but that seems more like a personal issue

This is the best game I have ever played especially the mixture of story and puzzle!