Night of the Raven is the official add-on to Gothic II. The add-on introduces a new playable area called Jharkendar, a previously inaccessible part of the base game's island, separated from the rest of it by mountains. The area has different zones and includes, among others, a deserted city, a canyon, a swamp, as well as several camps and temples. The expansion adds a few new skills (including Acrobatics and the ability to read an ancient language) and new items, as well as a new faction (pirates) and other material that provides more insight into the world of Gothic II as well as its predecessor.
Following community requests, the add-on also increases the difficulty level of the base game, adding tougher monsters, reducing the amount of healing items, and making skills more expensive to acquire.