Kei Oyama - is a video game programmer. Kei Oyama began his career in 2017 and has worked for companies such as Arc System Works, DotEmu, InterOne and Arc System Works Co.. Kei Oyama's first game was Double Dragon IV which was released 7 years ago. Best Game Kei Oyama contributed to was Double Dragon IV. Kei Oyama's latest work is Double Dragon IV which was released 7 years ago.