A very pleasant-looking and exciting game, thank you!
I think you can make the text larger, especially the cards. I couldn’t read the text on the cards.
On the other hand, it didn’t stop me from understanding what does what. Except maybe for the star—what does it do?
I didn’t encounter any bugs, but the game stuck after taming the island. Is this a bug?
The game has a clear and clean process, I would say. You can easily build upon it what you want. Regarding your question, it depends on what you want to make of it. I would add some story, personally, so there will be a start and an end. And player would feel the progressions and learn about the lore and the personality of the protagonist.