Wandering the streets of Seoul’s hipster haven, Hongdae, you’ll find a treasure trove of awesomeness. But one of the first things to strike you on emerging from the Sangsu subway is this Super-collection of feisty videogame plumbers. They’re all here: Mario, Luigi, power-ups and bosses, too, painted on every telephone pole for blocks. If you run fast enough, humming the theme and blinking your eyes madly, you’ll look like a fool. But it’s still pretty fun.