More Game Gear adventures. Everything about 
Even the box art is extraordinarily unremarkable. is generic, down to the name and title screen. Still, in 1991, full roleplaying experiences on handhelds don't really exist yet. That cuts it an enormous amount of slack.
Eternal Legend
Even the box art is extraordinarily unremarkable.An open map, turn-based fights, leveling and other standard tropes might appear as singular systems in other games, but this is one of the first to approximate the full console experience. It even has a ton of little tunes, ranging from jarring to jaunty.
You can play a translation here.