Stop the presses: King has released a game that isn't just a very slightly redesigned version of Candy Crush.
Sure, you have to make groups of three or more shiny gems in a series of cutesy puzzles, and wait or pay to progress. But Diamond Digger is a bit different. Each puzzle is set over multiple screens, like Pet Rescue Saga, and you need to manage the flow of water, much like Where's My Water?
If you're a fan of King's Saga saga you'll like it, though it's quite battery-intensive.