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

the second tier has been reworked; the most significant visual changes affected the Altgreid – it was necessary to clearly distinguish the second tier from the sixth, so the helmet was discarded, and the armor became simpler (in principle, this is correct – cultists should not care about the lives of lower-ranking cult members!)
the abilities have also been changed; the purple unit received protection from arrows, and the blue unit received a fast attack (the unit does not receive a counterattack from slowed units), a slowing spell, and a sacrifice ability, but it initially has no mana, so cut down those fish-men.