Think you're good at Super Mario 3D Land? You might want to watch the following movies before answering the question.
Nintendo has released volumes one and two of its Super Mario 3D Land 'Super Play' series, showing off a range of impressive in-game feats.
They include speed runs, shortcuts, hidden areas, how to get infinite 1UPs, and generally advanced platforming skills.
Super Mario 3D Land was the second best-selling game in Japan last year.