According to listings on GOG.com and Fanatical , the Special Edition includes:
: A digital art book featuring exclusive concept art and behind-the-scenes designs.
: Deploy imperial fire lancers, disciplined samurai, and Mongolian horse archers. Breach walls using gunpowder-based weaponry like the hwacha arrow launcher and fire oxen.
: A brand-new score composed by series veteran Robert L. Euvino.
As detailed on the Official Steam Page , here is what you need to run the game: : Windows 7/8/10/11 (64-bit).