Not really insane, but the history of the system‘s making is worthy of a movie.
In-house jealousy, Nintendo backing out of contracts that seemed already in the pocket, big boss Yamauchi getting mad at his old protégé when he tried the prototype and couldn’t see shit, Yokoi being on the brink of breakdown but still never letting the project go, the GB finally launching and trumping the competition while being the absolute underdog. All of this intertwined with the mind-boggling story of the rights to Tetris, the undisputed cornerstone of the system’s success. That little grey brick has possibly the most interesting background of any gaming system ever made.