"Mario Maker is a side-scroller platform game creating application developed and published by Nintendo for the Wii U video game console, scheduled for release in 2015. The application is a spin-off of the Mario series, in which players can create their own Mario levels.
Players can easily switch between two different visual styles: the original Super Mario Bros. 8-bit NES graphics, and the New Super Mario Bros. U style of HD graphics."
Source: Wikipedia, "Mario Maker", available under the CC-BY-SA License.