NEC TurboDuo

Released in 1992
In 1992 TTi (Turbo Technologies Inc.) released the TurboDuo, the North American version of the Japanese Duo. The system combined the TurboGrafx-16 and an enhanced version of the CD-ROM drive (the "Super CD-ROM²") into a single unit. The system could play audio CDs, CD+Gs, CD-ROM2 and Super CD games as well as standard HuCards. The Super System Card required for some games when using the original CD add-on as well as some of the Japanese variants of the TurboGrafx was built in to the Duo rather than requiring the card to be inserted at all times when playing CD games. The original pack-in for the Turbo Duo included the system, one control pad, an AC adapter, RCA cables, Ys book I & II a CD-ROM2 title, a Super CD disc including Bonk's Adventure, Bonk's Revenge, Gates of Thunder and a secret version of Bomberman accessible via an easter egg. The system was also packaged with one random HuCard game which varied from system to system (note: Actually, Dungeon Explorer was the original HuCard pack-in for TurboDuo, although many titles were eventually used, such as IREM's Ninja Spirit and NAMCO's Final Lap Twin and then eventually a random pick).