One of the major releases the Wii U will get next month is the HD re-release of The Legend of Zelda: The Wind Waker. The update is mainly focused on the visuals, taking the standard definition GameCube originals and bringing them bang up-to-date with a HD makeover.Although Wind Waker will appeal to a new generation of gamers 10 years after its original launch, there’s going to be quite a few older gamers who have fond memories of the game. But is it worth buying it again or just getting your GameCube back out of storage?GameXplain has decided to help you make that decision by doing a side-by-side comparison video of the GameCube and Wii U versions. This is purely to show off the visuals, but it does demonstrate where Nintendo has put the work in.Yes, it looks pretty, but is it enough to entice a re-purchase? Well, there are other features of the update to consider, too. For example, the Wii U GamePad has been put to good use acting as your inventory, and you can control certain items from the touchscreen (including weapons that take advantage of the built-in gyroscope for aiming). And of course you get to play the game on the GamePad away from the TV if you wish. Nintendo has also tightened up the game by making the ocean load faster to improve the sailing sections, and if there was something you found really tedious in the original, chances are it isn’t anymore on Wii U.Finally there’s Hero Mode, which should be the main draw for returning gamers beyond the graphics update. Hero Mode is hardcore mode. It removes the hearts dropped by enemies and through pot smashing, and enemy damage is doubled. If you want a new challenge from a game you already beat a decade ago, Nintendo is offering just that.So, is Wind Waker HD a buy?