synodiporia might float your boat! It's on the faster side of medium but there are plenty of slow taggers and people who will backtag into infinity. The setting varies, and occasionally includes opportunities for shady shit, soldier shit, and even murder. (The next setting's going to be ninjas!) It'd be a time mismatch in the 'more characters are from early 21st-century Earth than aren't' sense, but any of this lot would be in good company, and sometimes everyone's confused by what's going on.

Cast-wise, we have a handful of Dragon Age folks and a smaller handful of Asscreeds (Ezio, Leo and Malik); I'm sure either group would love to have another of their number!