Born of Blood is an expansion for the futuristic 4X game Sword of the Stars. It takes place in 2445, 30 years after the first stellar empires began to expand. Four races clashed and after the first wars an age of diplomacy dawns. A treaty that is torn to shreads when a new race enters the scene: the Zuul slavers, already hinted at in updates for the original game. They have new drive systems, ships, technology, and tactics, including psychic powers. The other races need to form alliances to take on this threat.
Next to the 4 known races, players can command the Zuul fleet, with 90 new ship sections and new tunnel drive technology. There are 15 additional weapons for the ship designs, 25 new technologies such as diplomacy and intelligence gathering techs, 4 additional galactic encounters, a new grand menace, plus 3 unique scenarios and 6 original maps. Other features include diplomatic communications, slavery and trade routes. The GUI has also been tweaked and there are enhancements to the multiplayer mode.