Destiny is a first-person shooter video game developed by Bungie and published by Activision. It was released on September 9, 2014, for the PlayStation 3, PlayStation 4, Xbox 360, and Xbox One consoles. Destiny marked Bungie's first new franchise since the Halo series, and the developers have a ten year plan for the franchise. Set in a "mythic science fiction" world, the game features a massively-multiplayer "shared-world" environment with elements of role-playing games. Players take on the role of a Guardian, defenders of Earth's last safe city, as they wield a power called Light to protect the city from different alien races. The Guardians are tasked with reviving a celestial being called the Traveler, while journeying to different planets to investigate and destroy the alien threats before humanity is completely wiped out. Since launch, Bungie has released two expansion packs furthering the story and adding new content: The Dark Below in December 2014 and House of Wolves in May 2015, with a third, The Taken King, set to release in September 2015, which will mark the beginning of year two of Destiny. Destiny‍ '​s style has been described as a first-person shooter that incorporates role-playing and massively multiplayer online game (MMO) elements, but Bungie has avoided defining Destiny as a traditional MMO game. Instead, the game has been referred to as a "shared-world shooter," as it lacks many of the characteristics of a traditional MMO game. For instance, rather than players being able to communicate with all other players in the game or on a particular server—as is the case in many conventional MMO games—Destiny includes on-the-fly matchmaking that allows players to communicate only with other players with whom they are "matched" by the game. Time-limited events and modes are also occasionally added or featured in-game..