Fun. (often stylized as fun.) is an American indie pop band based in New York City, New York that was formed by Nate Ruess, formerly of The Format. After the 2008 breakup of The Format, Ruess then formed Fun with Andrew Dost of Anathallo and Jack Antonoff of Steel Train. Fun has released two albums, their debut Aim and Ignite in 2009 and their latest Some Nights in February, 2012.