That was fun. although i think the battery mechanic is broken. i could keep digging when the battery was all red. If you were restricted to 5 digs for 25 money (which by the looks of it thats what you intended) that would have been very hard but i could see how it would be much more satisfying to win.
Ive had a metal detector for years but im just too lazy to learn how to use it and go and find somewhere to search so im very grateful for this game.