Very cool dude. Are the tiles preset or random? It would be interesting to unlock little people in houses so you don't feel so alone in the world. I think they might appear because I saw a quest for enemies.
Thank you :) The unlockable islands are not yet randomly "generated". But I think that as something I could implement in the future.
My plan is to include much more interesting content on the islands. The longer you play the more NPCs you will unlock. Over the time your island will feel more and more "alive".