In one story, "One of Those Days" I have mages and vampires and werewolves. though, under the 'rules' I made up, werewolves are way cooler than vampires. But they're cooler than vampires in any circumstance.
Aliens. Deamons. Humains. Beastlings (part humain, part animal, always fun). Uhhh...more aliens? I don't know, each alien is a bit more complex than standard fantasy staple. In my two fantasys I didn't really like using elves and such, so I made up some races.
Lets see if I can remember what they were...there was the Kia, which were part lizards...then there were dragons, which could change into humain/dragon form. Then there was this one race who's name I can't remember, but they had four legs and were really mean.
Then in my other fantasy, I had magicals (they're humains with magical powers), Siltstalkers, which had no head and a massive mouth in their chest and lots and lots of teeth. Soulless, which only come out in the evening and morning, and they look like green fireflies, but if you let them get to close or fall asleep near one, they'll go up your nose and suck out your brains!
Then there was this one race that I invented that evolve when you change their enviroment. So you make the enviroment cold, and they adapt to the cold. Adapt AND grow, so they get bigger. And yes, I know that's practically unkillable, because killing things is just changing the enviroment. In the end I introduced guns that destroyed matter outright, releasing huge amounts of energy...so you still blew up the planet that the aliens were on...
Oh, the aliens had two weakness actually. First: They don't have sentince. They just react, which means Humains can just stay out of their way. Secondly: if they're left in an unchanged enviroment for too long, they revert to their most basic 'dorment' phase (which looks like black grit). Then if you do something stupid, like change the enviroment, then it wakes it up.
Those are the races I used that I can think of right now. And I'm glad to say that I've made MOST of them up myself. Or at least I think I did...