The Game Gear Shinobi is the first of the two Shinobi games released for the Sega Game Gear. The level design structure starts off with a non-linear stage select, players must rescue all 4 ninja pals and use their combined strength to get through the City of Fear.
Greenalink collects all life expansions in the game to upgrade the character, and as a result you get to see some interesting damage abuse strategies in the later levels that cut down a decent amount of time.
The author has provided textual commentary that can be seen as soft subtitles in the encodes and in the movie file.