The Duo focuses entirely on NEC's home console hardware, offering compatibility with every TurboGrafx-16/PC Engine game produced.

The Tsushin Booster for the PC Engine is one such project, possibly the victim of vicious commercial games between the leading Japanese console manufacturers at the tail end of the 1980s.

Following on the success of the Analogue Pocket handheld player, the Duo will allow players to play TurboGrafx-16. PC Engine. SuperGrafx, TurboGrafx CD, and more in 1080p.