Napoleonic : Total War II is a total conversion of Rome: Total War v1.5 in Napoleonic Era, featuring a lof of new historic factions and units, playable in multiplayer and singleplayer. There is too a playable campaign submod.
Great mod, although kind of useless, its fun for people who cannot run napoleon total war. only problem is that is might be a little confusing, but all in all its great, and i enjoy it.