Ryushin Hamada - is a video game director. Ryushin Hamada began his career in 1996 and has worked for companies such as Aspect Co. and SEGA. Ryushin Hamada's first game was Sonic Blast which was released 27 years ago. Best Game Ryushin Hamada contributed to was Sonic Blast. Ryushin Hamada's latest work is Sonic Blast which was released 27 years ago.