These are the 40 cards (unsorted) for the first Datach game, Dragon Ball Z: Gekitō Tenkaichi Budokai. The barcodes (EAN-13) have been read with Bytescout BarCode Reader and can be used with the MESS emulator. I haven’t verified the codes yet, if you find any mistakes then please let me know.
Today the second game for the Datach Joint ROM System was waiting for me at the post office. I’m glad to have found it for a decent price as these mini cartridges and barcode cards are quite rare and/or pricey.
Ultraman Club: Spokon Fight!! (ウルトラマン倶楽部 スポ根ファイト!!) is a track and field / Olympics game with characters from the Ultraman universe. It contains a Datach mini cartridge and 40 barcode cards (including two blanks).
Recently I aquired an interesting pirate 2 in 1 Famicom cartridge:
On the title screen you can select two games:
The Bandai Datach Joint ROM System is an add-on for the Nintendo Famicom. It plugs right into the cartridge slot and comes with its own small cartridges. The games are enhanced with barcode cards, similar to the Mattel HyperScan.
The retail package with one include game, Dragon Ball Z: Gekitō Tenkaichi Budokai, is rather easy and cheap to obtain.
Additional games are very rare and even rarer and pricier when the corresponding barcode cards are included. I’ve seen some bootlegs of those games on regular Famicom carts but never tried them so far.