Simplify the following text for a Grade 10 native English-speaking person.
Original: Three optional expansions are currently available : World of Warcraft : The Burning Crusade , released in January 2007 , World of Warcraft : Wrath of the Lich King , released in November 2008 , and World of Warcraft : Cataclysm , released in December 2010 .
Simplified: It has three expansions , World of Warcraft : The Burning Crusade , World of Warcraft : Wrath of the Lich King , and World of Warcraft : Cataclysm .