The game seems to have a lot of events going on which gives you plenty of puzzles to do. Definitely a good thing. I give it a low rating because it seems they purposely don't give you what you need in a puzzle. Several times I would play a puzzle and I would need to collect a quantity of a certain color gem. Yet that gem would rarely ever show up on the board. I played for over a week and found this happening very frequently. It made the game frustrating so I quit.