Fallout sounds good, whether it’s radiation or something more exotic and fabricated like a poison that got out of control or something.

As for age of characters, I’m not sure....it might be interesting to have a range. I thought it might be interesting to play a kid. Maybe I’ll play two, one really young and one older, maybe mid twenties or early thirties? But I think it can range. 

Maybe for this RP since there’d Be a couple of us, instead of a sibling pair we have kind of a slapdash adopted family that sticks together and have found each other over the years.