As many guessed based on the game’s setting, story, and art style, The Legend of Zelda: Echoes of Wisdom is officially set in the “Hero is Defeat” timeline.
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The Legend of Zelda: Echoes of Wisdom is available on Switch.
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Even so, Nintendo continues to maintain at least some semblance of consistency where the timeline is concerned, and has now officially revealed what the recently-released The Legend of Zelda: Echoes of Wisdom’s place in it is.
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Specifically, as per the updated series timeline, Echoes of Wisdom is set between the events of Tri Force Heroes and the original The Legend of Zelda.