Crusader Kings II is a grand strategy game developed Paradox Development Studio and published by Paradox Interactive for Microsoft Windows and Mac OS. It is the sequel to Crusader Kings, and takes place in Medieval Europe. A "dynasty simulator", players control a Medieval dynasty from 1066 to 1453, though this can be changed through DLC packs.

Crusader Kings is a grand strategy game developed Paradox Development Studio and published by Paradox Interactive for Microsoft Windows and Mac OS. It is the first game in the Crusader Kings series, and takes place between December 26, 1066 and December 30, 1452.