In Animal Crossing: New Leaf, you could travel to a tropical island and find a variety of different fish, bugs, and fruit, and it could get old pretty quickly. This island was always the same, permanently in summer year-round, but things have changed for New Horizons. The Mystery Tour in Animal Crossing: New Horizons is an extension of this feature, with a variety of deserted islands to visit (but within your own hemisphere and season).
Mystery Tour islands are much smaller than your main
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