In addition to making retro Super Mario Bros. levels, Nintendo's Mario Maker allows you to create stages inspired by Super Mario Bros. 3 and Super Mario World.
When I last saw Mario Maker at E3 2014, I was pretty pleased with how it was coming along, though only being able to use the retro Super Mario Bros. or shiny new New Super Mario Bros. games to set the stage for my level designs was a bit limiting. At tonight's Game Awards, Shigeru Miyamoto capped off a Nintendo-filled intro by showing some new Mario Maker footage (it starts at about 3:52 in the embedded video), and wow, it's come a long way in a short time.
As you can see, Mario Maker has branched out in the six months since E3--Super Mario Bros. 3 and Super Mario World have been added to the mix, providing even more options for level-building.
Mario Maker is due out for the Wii U in 2015, which will also mark the 30th anniversary of Super Mario Bros. In related news, you're really old.