It’s also highly scalable as it lets you use your own graphics, music, and sounds. There’s nothing mysterious about the editor and the menu system, and its drag-and-drop interface is accessible and can be learned in a few minutes. The levels included in SMBX are, for practical purposes, a technical demo of the tool’s potential. But that’s the least of it, as its user community has released a huge array of “worlds” to make Nintendo’s own recent retro-feel productions blush. The game already contained an enormous adventure made of more than 60 levels with elements from Super Mario Bros 1, 2, 3 and World, and lets you play Mario, Luigi, Peach, Toad, or Link as an invited character. It’s far from a pioneer in its field, though: Super Mario Bros X is a free fangame for Windows that includes an in-depth scene generator, with the benefit of being able to add your own visual and audio resources. One of the upcoming releases that Nintendo is promoting in the event is Mario Maker, an extension to create and share your own levels on Super Mario Bros. The E3 2015 expo currently happening in Los Angeles might well be the gaming expo with the biggest media impact in the whole world.