There are dozens of toy GB emulators, but nobody has yet emulated the wildly successful Bandai Digimon Digivice. It's based on near-identical technology to Band

There are dozens of toy GB emulators, but nobody has yet emulated the wildly successful Bandai Digimon Digivice. It's based on near-identical technology to Bandai's "Tamagotchi" virtual pet though Digimon was marketed mostly towards at boys and Tamagotchi was marketed mostly towards girls. It's from the same era as the Game Boy Color and has some interesting features (serial communications between devices, and the infamous "tab cheat" that momentarily disconnecting the battery with a plastic tab to randomize the memory contents). Interesting how Pokemon is widely emulated, but nobody ever bothered with Digimon. There has been multiple generations of Digivice hardware, so best start at the original. I'd like to see somebody take on the reverse-engineering challenge. I don't think there's even a ROM dump yet. They've actually started selling new stock recently (20th Anniversary Digivice), including at retail stores for around $30 each.