I've done some extensive research about the arcade company Fuji Enterprise (フジ・エンタープライズ) and want to share it in this thread. Fuji Enterprise was one of many players in the 1970s arcade industry. It was also (in its own way...) one of the pioneers of video games. There's a lot to tell. As a lot of information is still missing, there's also going to be a lot of guesswork. Feel free to share if you have more information.