Europa Universalis III is a grand strategy video game developed by Paradox Development Studio and published by Paradox Interactive. The game was released for Microsoft Windows in January 2007, and was later ported to OS X by Virtual Programming in November 2007. Europa Universalis III has a 3D engine that requires the system to meet the Pixel Shader 2.0 specification. The map has 1,700 land and sea provinces encompassing most of the world, with 250 playable historical nations. The game also uses elements of other Paradox games such as Crusader Kings, Victoria, and Hearts of Iron II.