The plot of _Inj ū Genmu_ is rather simple: the King of Beasts commands you, a
lowly minion, to venture into the world of humans and bring him young, pretty
girls. To do that, he must defeat them in the traditional Japanese matching
card game _hanafuda_.
The gameplay is basically a series of hanafuda matches, against increasingly
tough opponents. After the player has won a match, he is treated to a series
of explicit images depicting the inexplicably popular phenomenon of Japanese
erotic tradition: young girls being raped by a tentacle monster.