Great little game loved all the rooms that you had and also how the drawings were so simple, and you focused on more gameplay and exploring rather than polish which can always be added later.
Initially, I found the controls difficult but didn't thoroughly read the instructions after that it became straightforward forward navigating around, I think I found 3/5 stones but have saved it to come back I suspect it's hidden in the room with the 3 number isles, but I'm not sure if they are just the same or not.
I'll keep an eye out for updates on the game, and great work again.