I've had these for awhile and still don't know what the heck they are or what they originally came with. Years ago I bought my TurboDuo used off eBay. It came with a handfull of complete and loose HuCARDs, a couple incomplete and complete CD games, and a sealed TurboDuo pack-in version of Ys Book I & II. The box and docs for the TurboDuo weren't included as it was a loose system but in the box along with the lot there were some plastic cards.



The large one has TurboGrafx-16 stats compared to the Sega Genesis while the small ones show the box art of Bloody Wolf on one side and Ys Book I & II on the other. I originally had three of the smaller ones but one disappeared over the years. Were these packed in with the system, games, handed out at trade shows? Any help would be great.