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Corona SDK is now Solar2D
To earn the exclusive reward (Spaceglasses), players typically have to complete a scavenger hunt for Doechii:
Find all 20 notes hidden around the main island. Annyeong (안녕) Emote: Bounce on 13 different mushrooms. Spotify Island Script – Collect All Doechii
If you're looking to "collect all" without scripts, several other free items are available via standard gameplay: Finish the tutorial. To earn the exclusive reward (Spaceglasses)