Pocket GT, a Japan-exclusive Game Boy Color title, likely focuses on racing or car-related activities. 'GT' often denotes 'Grand Touring' in the context of car games, hinting at a possible racing simulator or arcade-style racing experience. Players could participate in races, customize cars, or progress through racing leagues. The game's graphical capabilities and gameplay features would depend on the constraints of the Game Boy Color.  The developers and publishers associated with the title remain elusive.

Pocket GT (Japan)

Pocket Densha 2 (Japan)