5 stars: It's a fun little idle game. You can play it and pay attention because you get a new barrel in less than a minute. The ad free purchase really is worth it because I takes out the ads forever, and you get the extra items without having to watch an ad. I'd recommend it for anyone who enjoys idle games.
4 stars: Great game that functions without many hiccups. Doesn't feel pay to play, you can watch ads to multiply boosts or for paid currency. Could easily still pay to get ahead in the events if you wanted to. My only irritation is every few ads one will crash the game with a black screen, with the only resolution being to force close the game and reboot it. Other than that it's a great game that doesn't feel like it's trying to milk you for cash.
4 stars: Love the game but it's really difficult to upgrade the men fast enough to get through the mines. It takes way to long to get through some of the rocks and chests. Unless you spend money, you are almost guaranteed not to win any events. Between upgrades on mines and goblins, then getting through rocks and chests, it's ridiculous!!!!
3 stars: Decent. Felt more like watching a movie than playing a game. There's nothing to do to progress other than dragging gobs onto mines. Once that's done, you move one tile to the next rock. Levels are linear, not open. Would have enjoyed more things to do. Gobs don't move on their own, so it's not really idle, but there's not much to do, so it's not really a game either. Ani...