Paradox Interactive is a publicly owned Swedish video game company founded in 1999. Employing approximately 560 people, it primarily develops and publishes strategy-focused computer games. Its business model emphasizes creating games with extended lifecycles, supported by ongoing downloadable content and expansions. Notable franchises published and/or developed by Paradox include Europa Universalis, Hearts of Iron, Crusader Kings, Stellaris, and Cities: Skylines. The company also publishes titles from external developers and holds the intellectual property rights to the World of Darkness franchise.