You won't need a bug-catching net to scoop up game-breaking bugs in action-adventure game The Legend of Zelda: Skyward Sword, which Nintendo released for Wii last month. One recently-discovered glitch can leave your save file completely unplayable, but Nintendo has told players how to avoid it.

Getting the bug would force you to revert to an earlier save file (which, due to Skyward Sword's antiquated save system, you will not have unless you manually duplicated an older file onto an SD card) or restart the game from the beginning, losing all of your progress. The section in question occurs around 30 hours into Skyward Sword.

Mild Skyward Sword spoilers, and the bug fix, are below.

At a certain point toward the end of the game, while collecting pieces of a certain Song, you're tasked with visiting the Fire, Water and Thunder Dragons in any order you choose. If you visit the Thunder Dragon first – and speak to a certain Goron adventurer more than once – you'll find that you can no longer trigger the Fire and Water Dragon events.

In an e-mail sent to fans, which the site Zelda Informer obtained Monday, Nintendo's Sharon Matheny apologizes for the glitch and explains how it can be avoided. The best way to be sure you won't break your game is to complete the Fire and Water Dragon sections before starting the Thunder Dragon.

The Wii's online infrastructure gives Nintendo no way of patching its games, so this is something that you'll want to be careful to avoid, unless you want your game to go on forever but not in a fun Skyrim sort of way.

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