Samurai Nihon-Ichi is an arcade game, and the "harder version" likely signifies a difficulty setting or a specific release that provides a greater challenge than the original version. While precise details on its development or release are scarce, the title suggests a game focused on the Samurai theme, probably with action-packed gameplay. Given its title, it likely involves a Japanese historical or fantasy setting. The lack of readily available information hints at a potentially rare or less widely documented arcade title.

Samurai Nihon-Ichi (version, harder)

Samurai Aces (World)