Daiku no Gen-san 2 : Akage no Dan no Gyakushuu

Dr. Parallel, an evil scientist, plans to control the Japanese construction industry. However, his scheme is thwarted by a giant wooden machine created by Genroku Tamura, Gen-san's mortal rival. Parallel then targets Genroku and his son, Minamoto-san.

The game is a classic platformer where you control Gen Tamura through eight levels, fighting Dan in boss battles. Some stages are horizontal shooters, and the final stage features vertical scrolling, where touching the bottom of the screen results in losing a life.