5 stars: This is a very fun and simple game. It's a perfect time waster that actually makes you think. They're is no real end goal, but getting higher blocks can be very satisfying, and setting up combos helps keep it from getting too repetitive. The ads aren't too bad, and you can pay to remove them if they bother you too much. The powerups are very helpful and not too expensive.
4 stars: Overall a great fun and rather addictive app. Only issue is that every so often it freezes after playing an ad so you cannot get back to the game play as no button appears and the go back icon on phone doesn't work either. This means closing app and losing some progress on game which is a bit annoying. Please review this issue to make the game a little better.
3 stars: I really like the game, and I realize ads are a part of the deal if a person does not pay to remove them. However, my suggestion would in my opinion make the experience much better for the user, if that matters. It's the abrupt interruption with no warning that's a turn off. It would be nice to know an ad was coming, say every 20 moves or every two minutes or whatever. Anyway, that's why 3 and not 5. But thank you.
3 stars: The game is fine. Lately, the game sometimes just freezes while playing. I have to kill it and restart it. Also, at the ends of some ads, the game will get stuck - the screen freezes and the game is unresponsive. This also leads to a kill & restart of the game. And, there's no reward payout if ...