BBD

BBD (广东步步达电子有限公司) was a developer and publisher of Mega Drive and Game Boy games, also credited with the development of a number of early Sintax games. Some of their Gameboy Color games were released in English with a cartridge that resembles a Gameboy Advance cartridge and has a seal that says "Oneself Play" on it. Multiple SKOB games have similarities to Sintax games developed by BBD suggesting that they may have been involved with producing those games.