Super Mario Run will be an endless runner, rather than your standard Mario platformer. In other words, it's optimised for mobile – Mario runs left to right automatically, and all you have to do is tap to make the plumber jump.
A longer press makes him jump higher, while power-ups will make him change direction, rather than just give him extra skills.
Super Mario Run will also have a multiplayer mode – a time-attack, asynchronous race against fellow players. Beat them and you'll earn coins, which you can use to upgrade your avatar's own Mushroom Kingdom.
There's no word yet on device exclusivity, or exact compatibility across the iPhone range. But it will launch at a "set price" when it eventually hits the iPhone this December, with a portion of the game available for free on a demo trial basis.
"We can not be more honored that Nintendo chose to bring Mario to iOS first," said Tim Cook, following the announcement.
What this means for the Nintendo NX remains to be seen, but the iPhone just got a big 1 Up over its Android rival when it comes to gaming. (Update: Looks like Super Mario Run will make its way to Android ... eventually. That's what the company tells Kotaku: "We do intend to release the game on Android devices at some point in the future.")
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Gerald is Editor-in-Chief of iMore.com. Previously he was the Executive Editor for TechRadar, taking care of the site's home cinema, gaming, smart home, entertainment and audio output. He loves gaming, but don't expect him to play with you unless your console is hooked up to a 4K HDR screen and a 7.1 surround system. Before TechRadar, Gerald was Editor of Gizmodo UK. He is also the author of 'Get Technology: Upgrade Your Future', published by Aurum Press.