Thanks to both @PixelCNinja and Saberman letting me know, I’ve been told that Str1der has shown off a work-in-progress proof of concept of the 1989 game Shinobi, for the Commodore Amiga 500. According to the developer he originally experimented with recoloring the visual assets from the Sega Master System edition and found the updated aesthetic so appealing that he decided to build the rest of

Source and More information: Shinobi – A proof of concept for the Amiga, as the original version was graphically terrible!

Author: indieretronews.com