"1. How many pearls are there in each clam? AFAIK, in original game, once you pick a pearl, clam closed forever, and that forced you to explore. I have tried to pick pearls on the first level, but they just keep opening again and again."
I noticed this as well, currently players can score-scum by just collecting 25 point pearls from the shallows over and over again. The oysters should "lock" after collecting a pearl, like in the original game.
Otherwise this is a great piece of work, plz fix! :)