Overall a nice game. Encountered some physics issues like the player flipping when at a wall or sometimes standing in the air below a ledge. I get that the islands are randomly generated? If so, very good work, the architecture is fitting the game play nicely most of the time. Also the hub's layout teaches you everything you need to know, very helpful!
I have some logical issues however. First, the islands absorb gravity and thus starting to float feels contradictory. Second, why did the player not absorb gravity the same way and falls to his death? Yes, for game play reasons, but the story you have in the game doesn't support this. Lastly it would be a charm to not collide with the small boxes you can destroy to find gold, because it's difficult to jump down of one if it's on a very small island. You don't collide with treasure chests, so why with the boxes?