Amazing game. It fits the theme very well in a new and fun way; I caught myself playing this for way too long lmao.
Music was good, fit in well with the aesthetic of the game and didn't feel very repetitive. The sound effects completed the sound experience as I found them pleasing. The gameplay was well thought out, not too easy, and not too hard, while still not annoying me.
All I can say is that I would have liked there to be some trees on the mainland too as it looked quite boring now.
(If it takes too much performance, maybe consider looking into LOD and such, and how to change that over distance to increase the performance.)
Overall, truly amazing game. Keep up the good work!