Ninja Gaiden: Ragebound takes approximately 6 to 12 hours to beat the main story, with an average estimate around 10-12 hours for typical players. For completionists aiming to fully explore side missions and get all collectibles, the game can extend to 15-20 hours or more. Some sources also mention the campaign can be as short as about 5-6 hours if focusing solely on the main story and speedrunning. The final boss rush and multiple endings can add extra gameplay time beyond the main story.