I know that there are many different mods, especially for FOnline Engine where we have Desert Europe (yeah postapo Europe), What remains from Surf Solar (I still waiting for this project ) or even FOnline: Australia. In according to the What remains which is total conversion game, FODE and FO: Aus use fallout style. Well, there is also Arcanum Reborn game which will be new Arcanum game on FOnline Engine.