The rights to the Harry Potter series were nearly sold to Nintendo back in 1998, reported blog
unseen64, and the company would have primarily created video games for its consoles Nintendo 64, Gameboy Advance and Gamecube at the time.
The report claims that Nintendo, who were in a battle for the rights with numerous other companies, including Disney and Universal, for the overall rights of the Harry Potter title, owned by author J.K. Rowling, would have had the film rights but may not have actually adapted them to screen. If Nintendo won the bidding war, there may never have been Harry Potter films, as Nintendo generally does not create film or television projects.
A few mockups Nintendo created, including Hogwarts, the Hogwarts Express and Hagrid's Hut, can be seen here. Character drawings were created as well, but were not allowed to be released publicly.
Despite the bidding war, Nintendo's creative ideas did not par up with what Rowling had in mind for the series, and of course, as everyone knows, the rights were sold to Warner Bros. and producer David Heyman for a reported £1million (including of course royalties over the years from the films and their byproducts). The video game rights for the movies and books went on to be handled by Electronic Arts.