What is the "Weirdest Japanese game" you've played?

[Diablos1979]

Japanese sure have vivid imagination.. Weirdest game i ever played was on PS1, don't know the name.. But your walking in a forrest of bamboo and crazy shit just comes at you.. A strange geisha lady with her neck stretching all over screen to give you a close up of her face. Crying ghost babies floating over the screen. Just crazy things, after playing 10 minutes your brain feels on crack..

Also one for the weird books is the Cho Aniki serie...