Update - I did try to stick it out with this game, but it's getting so difficult to win any of the levels in one go. Opening mycrofts gifts yields way less useable items, so no point there. Not enough opportunity to win items to help you beat levels, so no point there. I've spent around 30 quid on this game, and it's just pointless. Maybe devs should consider using ads to give you boosters and gems. It's just getting too frustrating and not getting much fun or reward out of it. Deleting now.