Samurai Shodown IV: Amakusa's Revenge, also known as Samurai Spirits: Amakusa's Descent in Japan, is the fourth in SNK's flagship Samurai Shodown series of fighting games. Chronologically, it is the second and final chapter of a story between Samurai Shodown and Samurai Shodown II, with Samurai Shodown III being the first chapter.

Samurai Shodown IV: Amakusa's Revenge, also known as Samurai Spirits: Amakusa's Descent in Japan, is the fourth in SNK's flagship Samurai Shodown series of fighting games. Chronologically, it is the second and final chapter of a story between Samurai Shodown and Samurai Shodown II, with Samurai Shodown III being the first chapter.