Straight away I have to say that the story behind as game really makes the game better for me. If I can get into the storyline of a game I can appreciate it a lot better, I think that’s the reason to why I’m so addicted to RPGs.
Do all games have a story? I think that a majority of games do have a story behind them, whether it be that you play a new recruit during WW2 trying to help save your country and get back home alive, a Nascar racer trying to win the Season, or maybe a lonesome peasant caught up in a greater picture. The question about storytelling is not if a game has a story, but about how the creators of the game develop that story toward you as a player, and as the character. For me as a gamer I prefer to live as the character when playing a game, sounds crazy but its true I like to submerge myself into a game.
I personally don’t know the story line behind second life, so I'm not going to try and go into that.
World of Warcraft, does it have a storyline? Hell yeh, it has got the have the best back-story I have ever known, I’ve have been a Warcraft fan for several years know, and that is mainly because I was grasped by the storyline of it. World of Warcraft is currently continuing the storyline of ‘Warcraft 3’ ‘Reign of Chaos’ and ‘The Frozen Throne’, with the previous two expansion packs, I could sit here and fill pages and pages going on about the storyline of Warcraft but I'm not going to, (insert sigh of relief from reader here) but I am going to give you this link http://www.wowwiki.com/Portal:Main just encase your interested. But the way the storyline within WOW has works is that you will follow, hundreds, yes hundreds of small storyline based on your character, these include race, faction, level, and location within the world, the higher level you get the more you are able to discover about the main storylines that Warcraft is based around.