https://www.siliconera.com/ninja-developers-explain-how-they-remade-shinobi-iii-in-3d/
Ninja Developers Explain How They Remade Shinobi III In 3D - Siliconera
Dec 18, 2013 - Sega had to redo graphics by hand to convert Shinobi III into 3D. They also included the secret six-button mode for the game, and the ability to choose between...
shinobi iiininjadevelopersexplain