Yup, it’s a real thing. Part April Fools joke, part actual content update for Guild Wars 2, the Super Adventure Box can be found in Rata Sum. It’s an 8-bit game homage, replete with chiptune music and charmingly blocky things to hit with your Sharp Stick. There’s no level requirement, and the “baubles” you get from doing it can be used to buy “Super” weapon skins, Obsidian shards, and a few other things.
The fake 80s commercial above, completes the package. The Super Adventure Box has 4 zones (for now).