Paradox Interactive AB (publ) develops and publishes strategy games for PC primarily in the United States and Europe. The company publishes own titles and titles developed by independent studios, as well as music and books. Its game portfolio comprises approximately 100 titles, including owned brands, such as Stellaris, Europa Universalis, Hearts of Iron, Crusader Kings, Cities: Skylines, Magicka, and Age of Wonders. The company distributes its games through distributors, as well as digital download portals. Paradox Interactive AB (publ) was founded in 1998 and is headquartered in Stockholm, Sweden.