Ah, check out the interest check section. These often have games that are just starting up and easy to join. If you're looking for something more established it's difficult. But you can look through the first 3-4 pages of advanced OOC to check for active games. And well... A lot more than 3-4 pages of casual OOC but if it's been a week since the last post, it's usually dead.
I'm not wrapped up in any typical fantasy right now, and I get the idea that a nation-type RP isn't what you're looking for, so sci-fi drops too. So really can't give you a direct link, but following the above it should be easy enough to find one.