The Ville Mystery Crates: Everything you need to know
FarmVille Livestock Mystery Crate: What's inside?
FarmVille Pets Mystery Box offers animals for your Pet Run Habitat
CityVille goes to the tropics with new Tiki-themed Mystery Crate and decorations
FarmVille: Birthday Mystery Boxes are back for one week
CityVille Mystery Crate offers three new items at a high price
FarmVille Birthday Mystery Crate: Gnomes available for one day only
New PetVille Midnight Crypt Mystery Crate -- find out what's inside [spoilers]