At the request of fans, Paradoxes decided to release the third addition to the "Europe III» - «heir to the Throne» (Heir to the Throne), not extend greatly the original game in terms of quantity, but improving in quality. One important feature is the meaningfulness of wars (each stage will have clear goals). Supplement will present another series of gameplay improvements: a more flexible system of Casus Belli, allowing precise objectives for each war