It's a good game but as most merge games you don't have enough energy to play for longer than maybe 10 minutes at a time. You do seem to have a lot of energy but with the combinations it takes to get to just one item goes in the blink of an eye. You can watch ads yes but its not something you can sit down and play. This necessarily isnt bad but I so far thoroughly enjoy the game and wish it were possible to sit and play consistently without having to use up all my gems or spending actual money.