RTF is a global modification that replaces all towns in the game.

For now, I've called this undead "revenants," but "undead" might be a better fit, although that term is already in use.
The name "zombie" isn't quite right either, because this is intelligent undead. I based the concept on Skyrim's draugr – they're not very bright, but they can still speak, use magic, and so on.