http://shmuplations.com/heiankyoalien/
Heiankyo Alien (known in the West by its Sega iteration, “Digger”) was a 1979 arcade hit in Japan, unique for having been created by students in the Theoretical Science Group of Tokyo University in 1979. In this 2002 interview originally featured in Chou Arcade, one of the original TSG student developers shares details and memories of its unusual development.