Complex sentence: The director of the project on the Nintendo side was Yoshio Sakamoto, already famous for inventing Samus and the Metroid series, he then went on to develop WarioWare, Inc. amongst others.
Split into simpler sentences: The director of the project on the Nintendo side was Yoshio Sakamoto, already famous for inventing Samus and the Metroid series. He then went on to develop WarioWare, Inc. amongst others.