#31 World of warcraft played on PC, released 2004
Not much needs to be said about this game other then wow 7 years old already! My wife and I played this together for about 2 to 3 years. There's tons of content, enough for playing 4 different characters and never having to do the same quests. The artstyle is great and the completely seamless world makes it a wonderful place to explore. I love all the references in the quests and characters and how it doesn't take itself too seriously. Dungeons are well made and great fun to explore.
But as with all other mmorpgs, eventually you run out of content and find yourself doing the same things over and over again. Nevertheless a great timewaster until you hit that wall.