Alan Koshiyama - is a video game composer. Alan Koshiyama began his career in 1998 and has worked for companies such as NovaLogic and THQ Nordic. Alan Koshiyama's first game was Delta Force which was released 25 years ago. Best Game Alan Koshiyama contributed to was Delta Force. Alan Koshiyama's latest work is Delta Force: Land Warrior which was released 23 years ago.