You'd better keep plenty of time free if you're paying a visit to Nintendo at this year's E3 gaming expo.

Nintendo will be showing off The Legend of Zelda on Wii U at this year's event, and according to Finder (via GamesSpot), the demo is a big one.

Nintendo is asking attendees to put 90 minutes aside to sample two extended demos that let players "step into the wilds of Hyrule and explore some of the grasslands, forests and mountains that they've been given mere glimpses of to date".

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If you're not lucky enough to be attending E3, then Nintendo will be streaming the action from its booth, while a further 500 fans will be able to check out the game in its New York store.

The open-world Zelda game is releasing simultaneously on the Wii U and NX next March.

Unfortunately, the E3 hands-on demos will only be on Wii U, so you'll have to wait a little bit longer to see how it stacks up on the Nintendo NX.

It was originally scheduled to launch in 2015, but was delayed into 2016 and was a no-show at last year's E3.

The game will feature a 'surprise twist' on the open-world concept, according to Nintendo producer Eiji Aonuma.