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Sylphy and the Sleepless Island is an adventure RPG developed by Milky Way and published by Kagura Games. It was released on Steam for Microsoft Windows on October 9, 2021.
One night while on a job, a small-time thief named Sylphy overhears a rumor about a powerful artifact called the Gem of Misfortune. Hearing that it will be vulnerable, she sets sail for the island.