Plot by Imdb: "The struggling comic artist Nishi (voiced by Koji Imada) who has just met his childhood girlfriend Myon (Sayaka Maeda) and they catch things up in her father's yakitori pub where they come face to face with two Yakuza members. Nishi gets killed in the process but in a highly bizarre encounter with God in the afterlife, he is brought to life, manages to kill both gangsters, and makes a run for it with Myon and her sister Yan (Seiko Takuma) as they are pursued by other gang members. The three are then swallowed whole by a giant whale. Trapped inside with a man who has spent the last 30 years inside the whale's belly, Nishi, Myon and Yan finally get a chance what true happiness means for them."
Based on cult underground comic book from Robin Nishi, Mindgame is an instant classic. As an anime, it shows how diversified and immensely creative are the people at Studio 4°C. It shows also that the most psychedelic story can be made in animation, and also that this medium is perfect for adult storytelling. The general art direction is close to none and the movie is filed with marvelous ideas. The representation of "god" as an always changing entity is pure genius. If you love anime, you HAVE to watch this, if you don't, you have to watch this anyway as this was one of the best Japanese movie of 2004.
Mindgame will be referred to in the future as a milestone in Animation and has already helped moving things forward for its acceptance as an adult way of artistic expression.
MASTERPIECE.
Trailer: