Samurai Warriors 4 Empires - PS4 [Digital Code] Samurai Warriors 4 Empires marks the return of the Empires brand in the Samurai Warriors universe after a nine year hiatus. Since the 2007 release of Samurai Warriors 2 Empires for the PlayStation 2, Samurai Warriors has grown to become one of the most successful and acclaimed titles in the Warriors universe. This revamped installment features improved gameplay mechanics and an expanded governing system, and explores the effects that building in-depth relationships and alliances have in times of war.