Let's get this out: This isn't an expansion, but a mod.
Fairy is a massive mod for Civ IV: BTS that may as well be a stand alon Civ title. It brings new music, mostly made by Project Zero, with other civs having unique themes, including pieces by Wagner.
It brings better graphics too, with each nation having wildly different units and animations. Environments are outstanding.
As for maps, the mod comes with a ton of new and original maps, including a campaign map, Europe, Middle Earth, and Tamriel from the Elder Scrolls.
Anyone who plays Civ IV, I recommend this. It's an amazing mod for a great game, which has kept me enthralled for countless hours.
Devil Survivor is a stragety role playing game for the 3ds which involves you buying and fusing demons together so you can fight and survive the game resembles durara in design so i say check it out