We've seen a lot to convince us that Super Mario 3D World will be great, but one burning question hasn't been answered until now: what can we actually do with the GamePad?

Eurogamer have put together a video that details what the second screen can be used for, from opening additional paths to revealing hidden items and enemies.

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They've also given us a look at Captain Toad's bonus levels, which cast the player as the Captain of the Toad Brigade from Super Mario Galaxy, and challenge them to run through a short obstacle course - without jumping.

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