Though Paradox Interactive has been gradually broadening its portfolio over the last few years, the grand strategy games produced by the internal team at Paradox Development Studio have remained the predictable and reliable cornerstone of their catalogue. Historical series such as Crusader Kings, Europa Universalis, Victoria and Hearts of Iron have all enjoyed sequels and expansions, fascinating hardcore strategists for well over a decade. They've established the studio as one focused on intricately detailed, carefully researched games that are firmly rooted in the real world, albeit ones that give players the chance to send history in new and unexpected directions.