Nintendo president Satoru Iwata has confirmed that Nintendo plans to bring one New Super Mario Bros game out per platform. Iwata said it’s both unusual, and a challenge, that the Kyoto based firm has had to develop two different New Super Mario Bros games in a short space of time. New Super Mario Bros 2 for the Nintendo 3DS is out tomorrow in the United States, while New Super Mario Bros U for Wii U is expected later this year.

“We only create a New Super Mario Bros. title one per platform,” Iwata said, while acknowledging that is unusual and a “challenge” for the company to be making two for the same calendar year, one for 3DS and one for Wii U. “I think we’ll probably go ahead and continue at that pace. That being said, that’s probably [Mario creator Shigeru] Miyamoto’s choice, so I can’t give you a 100% guarantee that that’s the pace we’ll continue at.”