several PlayStation Home exclusives were released. The first game was Xi, which was released before the change in development to a gaming platform. The more prominent PlayStation Home exclusive games included: Xi Xi ( or ) was the world's first console-based and virtual world-based alternate reality game. The game was an adventure that took place in a series of secret areas in Home that changed frequently. The goal of the game was to help find "Jess" and the meaning of the letter Xi by collecting fragments and butterflies. The game also involved the users to search for clues in the real world. This game was created by nDreams who released several spaces for Xi. The Xi Museum featured an updated Xi Alumni Hub, the three Alpha Zone 1 spaces (Game Test Area, Maximum-Tilt Lobby, and Adventure Lobby), and four Alpha Zone 3. In addition, the Xi Museum featured a Xi Museum Shop, with items such as a Maximum-Tilt bike and the robot Stapler for users’ personal spaces. Users could also purchase the public space "Party at Jess's Apartment" that was featured during Xi. A sequel called Xi: Continuum released in December 2012. It took place over a period of 47 days, though users could complete it at their own pace. Over the 47 days, it featured new content each day, either in Home, on external websites, or via community tasks. The objective was to stop a character named EatFlamingDeath and prevent a bomb from destroying the Continuum, and in turn, Home. Sodium Sodium was the first Home based massively multiplayer online game released on December 17, 2009, to the European and North American versions of Home and on June 17, 2010, to the Japanese version. This game was developed by Outso and published by Lockwoood Publishing, and was the first part of a planned four-part series of games for Home (only two were released by the time of Home's closure). Like in Xi, there was a space for the game that could be accessed through the Navigator. The space was called the "Sodium Hub" and featured the Salt Shooter Game. The first five levels were entirely free, while additional levels and experiences could be unlocked with the purchase of virtual items. New games, virtual items, and community events were added. Sodium 2: Project Velocity was released on June 16, 2011. Unlike its predecessor,Sodium 2 was completely free to play. The