in terms of full programming, none of them. In auxiliary things such as text and game changes, I had more going at Romstar, with Tiger Road and Ninja Warriors as well as the home division games. At SNK, we did some text trasnslations but I did more of hardware modification designs, such as the Thrash rally steering wheel and ticket redemption system for the Neo Geo. One project which never completed was in revamping a Candy Crane to comply with California state law (joystick and drop button). For that one, I was designing a new computer board from scratch. For the programming manual, I helped int he tech side of translating it to English.
Back at Romstar, I did much more towards game development. One large project was the Tera game system board. I helped in the design (specced the sound system my way, 2 YM2203s in stereo with speech) and spent a week at the hardware designer's house learning to program it in C. On return, me and a friend worked together in making a darts game. Tera was cancelled but the work we did went into the NES cartridge released called Magic Darts.