There are many different websites that offer lists of role playing games. Websites such as List Verse, IGN, Video Gamer and PC Advisor all have lists available free of charge.
In my opinion, if you like multiplayer online roleplaying games, maybe get a game called IMVU of 2nd life. Those are the 2 most popular games other than the Sims.
The Metabarons Roleplaying Game happened in 2001.
Pathfinder Roleplaying Game happened in 2009-08.
Marvel Universe Roleplaying Game happened in 2003.
DC Universe Roleplaying Game happened in 1999.
The Lord of the Rings Roleplaying Game happened in 2002.
Amber Diceless Roleplaying Game happened in 1991.
wow stands for wonderfully out(of the)way. A very popular video game called 'World of war'
Star Trek Roleplaying Game - Decipher - happened in 2002.
Star Wars Roleplaying Game - Wizards of the Coast - happened on 2007-06-05.
The ever popular Dungeons an Dragons has remained popular ever since it's inception. Some other systems are Spycraft and the Star Wars Roleplaying Game.
Roleplaying in the game World of Warcraft