Sega Game Gear, a color handheld console, released in 1990. The Genesis preceded it. It was succeeded by Sega CD and 32X (Genesis add-ons), Pico (educational), and Saturn.

Games for Game Gear:
1994
Platform Game. Europe and North America release. Simba loses his father, grows up, and defeats his uncle to become king.
Action Platform Game. Spider-Man, Cyclops, Storm, and Wolverine have to escape Murderworld.

1991
Platform Game. Worldwide release. Sonic travels across many different zones to defeat the Eggman, Dr. Robotnik.