It looks like we need to clear up a research credit error here.
Yoichi Yamada vs Yasuhisa Yamamura
- There is a good chance that Doki Doki Panic and Zelda 2 have been wrongfully credited to Yoichi Yamada when it was Yasuhisa Yamamura who designed those.
Yasuhisa Yamamura
- Soccer (1985) (credited as NON. Yamamura and BABA. YAMAMURA) ?
- Doki Doki Panic (credited as Yamahen)
- Zelda 2 (credited as Yamahen)
- Zelda 3
Yoichi Yamada
- ?
- Zelda 3