Paradox Interactive is a video game publisher and developer that specializes in strategy games. The company was founded in 1999 by Fredrik Wester and is headquartered in Stockholm, Sweden. Paradox Interactive's games include titles such as Crusader Kings, Europa Universalis, and Hearts of Iron, all of which are known for their deep gameplay mechanics and historical accuracy. The company has a large and dedicated fanbase, and its games have won numerous awards and critical acclaim. Paradox Interactive is publicly traded on the Stockholm Stock Exchange and has a market capitalization of over $1 billion.