@AbysmalDemon It's easier to list off genres I don't like. I tend to not favor Post-Apocalyptic settings, nor do I really like Lovecraftian/Call of Cthulhu types of stories where you can't so much as even look at the thing trying to eat you without going nuts. As for pre-existing settings for other worlds, it depends on the series, but usually no. And if I am going to play in a setting like that, I would prefer it to be one of those things where there are no characters from the original work. Either in the RP they don't exist, or you're working in a completely different place and time from where the fiction in question occurred.