Only released in Japan, the WonderSwan was Gunpei Yokoi's next system after developing the Virtual Boy for Nintendo (he also produced the Game Boy system and the Metroid series). The initial WonderSwan features a monochrome display screen and was created to be played either vertically or horizontally. Games differed on this aspect, with a wide range of video games. Plus it operates on simply one AA battery!
Black & White/Monochrome Display
Vertical or Horizontal Screen Play when Rotated
Games Feature Amazing Crisp Graphics
Clear Blue Case ~ Only Released in Japan