No, it is not . it is just made up names from the game developers. that is why the comments above your characters head sound like things that a real gamer would say. and they are pre-made comments from the game developers.
yes,there is a lot of multiplayer game like:www.ourworld.comwww.fantage.comwww.clubpenguin.comwww.runescape.comAND MORE.......p.s:you have to try ourworld.com its fun to play, belive me!!!