Wonderful, wonderful game! The perfect game to spend a sunday afternoon. I didn't get all the gems, but I had fun finding some of the more hidden ones and encountering the bosses.
I like that there is no combat (beyond the boss fights) because that's usually what puts me off this kind of games. The game speed option is also a welcome addition! I probably wouldn't have bothered to find all the underwater secrets without it.
All in all a great experience. Thank you for making it!