I asked this over on The Masters’ Council, but I’ll ask here too:

For some time now, I’ve been planning on running a Buffy campaign with just one player, who would be playing the Slayer.

The whole thing was put on hold for a while, and now that I’m thinking about it again, I’m wondering if there is some system other than the B:tVS RPG that might work out better. Maybe something that puts more authorial power in the hands of the player, possibly something that’s more of a Narrativist/Sim blend.

Any suggestions for what that system might be? Indie games would be preferred, but it’s not a requirement. Non-D20 is a requirement.