There is one for oblivion if you own the game...actually an entire warcraft mod called invason from azeroth wich adds all the races (it requires shivering isles expansion and several other mods listed in the mod description though) http://www.nexusmods.com/oblivion/mods/39892/? the trolls aren't 100% acurate like they have 5 fingers and wrong nose but it's closest thing there is atm.