Puzzle & Dragons: Super Mario Edition was announced recently, and looks to combine the popular mobile (and later 3DS) puzzle franchise with Nintendo's most famous character.
Speaking with 4Gamer, developer GungHo Online's Daisuke Yamamoto and Kazuki Morishita have revealed that the game was the result of a pitch made by the company to Nintendo, rather than the other way around.
As Morishita explains, the catalyst for this was the success of Puzzle & Dragons Z:
We contacted Nintendo with New Year's 2014 greetings as we reported that Puzzle & Dragons Z had sold one million copies. We said, "we'd like to do more Puzzle & Dragons spin-offs" to president Iwata and Mr. Miyamoto. From there on, we tried to create the Mario version in-house at GungHo as we thought, "wouldn't it be better to show Nintendo?" Then discussions with Nintendo progressed again.
According to Yamamoto, a prototype was created and shown to Nintendo "several months" after the initial pitch was made.
Morishita has also revealed that more Nintendo characters will be in the game, and that there are currently no plans to bring the game to mobile phones -- something which shouldn't come as a massive shock. It was also stated that Nintendo itself will be handling the announcement of the western localisation of the game, so expect to see that in a forthcoming Nintendo Direct this year.
Puzzle & Dragons Z still remains unreleased in the west, despite assurances from GungHo that it would be released outside of Japan, where it has sold over a million copies since launch.