Raynesword
2015
2007
2011
2016
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!