Yes, Soul Knight has been localized into multiple languages. Matthias Bettin contributed to the initial German localization, Numa Crozier provided French corrections, Jun-sik Yang (ladoxy) made Korean corrections, Iván Escalante made Spanish corrections, Oliver Twist worked on the initial Russian localization, and Почеревин Евгений, Алексей С., and Турусбеков Алихан contributed to additional Russian localization. Tomasz Bembenik worked on the initial Polish localization.