White Wolf's line of games set in the World of Darkness
White Wolf also has another line of games set in the same universe but with stretches of time between them, in chronological order from the past to the future (which is the reverse of their order of their publication) they are:
They also published Ars Magica for awhile, among other games I'm certainly forgetting (the Streetfighter game?). Another game, Exalted is due to be released Real Soon Now.
Incidentally, it's 'White Wolf Game Studio,' without the "S." I know I'm a horrible person for making yet another White Wolf node, and I probably will rot in Hell anyway. But I figure White Wolf Publishing, Inc. would care, at the very least I prefer making the right hardlink in my writeups.