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

Hmm, I tested it, and the active abilities don't seem to work at all. But the passive abilities seem to work, although some of them are unclear.
For example, adding Agility to a flying vampire always gives it a +2 bonus to defense; it seems the game only counts "steps" and not flight.

Thank you for working on this. Interesting facts sometimes emerge, and I need to consider new possibilities.