An alleged picture from Nintendo's E3 2014 showfloor was leaked, showing a station displaying something called Mario Maker. The image comes by way of Nintendo Enthusiast, and we won't know for sure what this is, or what platform it's aimed at until E3 come next week.
So until then we can only make guesses because we're a blog. Best guess is that you're making your very own Super Mario Bros. style levels. Not exactly a concept that comes to mind that would help push Nintendo platforms into consumer hands, but still a neat idea that's probably long overdue.
Join Destructoid for our E3 Unfiltered coverage all of next week. The Nintendo Direct will air on June 10 at 9AM PT where we will see all sorts of Nintendo announcements, including details on the special 3DS 90 minute presentation.
RUMOR: IS NINTENDO SHOWING A “MARIO MAKER” GAME AT E3? [Nintendo Enthusiast]