Unlike the 8-bit versions of the Spider-Man vs The Kingpin, which are the same game with only different size of the screen, differences between Game Gear and Master System versions are significant enough to depict here.
a different title screen, unlike the Master System version which has the background of the Gotham City and the Batmobile.
an opening cutscene which depicts the death of the Ice Princess and the framing of Batman for her death.
a health bar for Batman.
different power ups. (Small and Large hearts for health and batmobile attack tokens)
much more aggressive and powerful enemies who take several hits
dying forces player to start from the beginning of the scene. (but not the level)
some enemies and bosses has additional attacks and movement sprites.
players can adjust the power of the batarangs. (Short ranged but powerful, long ranged but weak and in between)
players can call Batmobile to attack all enemies on the screen.
more linear level design with different enemy placements, focusing on combat rather than platforming.
Batman looks properly in black instead of bluish-purple costume he is wearing in the Master System version.
new graphic effects, such as snowing effect in the first level.