Omg.... You should try to look into overwatch....luckily most the game lore is in the short videos on YouTube....but I would recommend the game...it is really fun if your a fan of 1st person shooters. Battle star galatica is one of my all time favorite shows....game would be really hard for mafia mostly because the only bad guys are the frost zombie things and it would be hard for something like that to be hidden in a crowd...they kind of stand out....the picture is so accurate
Over watch I might play but I don't have an interest in running a theme like that as I've never played it.
I don't recall frost zombie things in BSG though.