4 stars: When it works it's fun, but very buggy. Crashes often, and will also crash my live wallpaper. Shooter will freeze while marbles continue to progress, causing levels to be lost. Tried deleting and reinstalling to solve this, ended up losing all my progress. Annoying. -- update: bugs seem fixed now, for the most part, so am enjoying game much more!
3 stars: The game itself is good, the problems surround it. The ads are annoyingly frequent and while an in-game purchase will remove them, the minimum price is $10. If there was a paid version at the price point of this type of app, I would get it, or at least a more reasonable purchase.
3 stars: PLEASE. PLEASE. PLEASE. Make the 5 buttons (bombs etc) on the left side bigger. A lot of times I don't push the button correctly and miss getting that item to use. Causing loss of game. This is a cool game but those buttons need to be bigger. Have better access.
3 stars: The game is fun but becomes very challenging (not necessarily a bad thing). The amount of popup windows you get when loading the game is nothing short of horrifying. It's enough to make me swap to a different game altogether.
3 stars: When a level ends, it's very easy to accidentally push an option to pay 1000 coins or use a rewind to keep playing. I have done this more times than I can count and wish I could get that money back. It's very poor placement of those buttons. This would be a 4 or 5 star if that were fixed.
3 stars: Adds are too long...