5 stars: I think it's a great mobile app just for the reason that the add implementation isn't outrageously annoying. Plus it's just fun, there are many creative ways of destroying planets and star systems, and the graphics are quite good. Overall it's the only mobile game which I didn't immediately uninstall while trying out apps in the past year or so. Good job Devs!
5 stars: Edit: My previous review desired a few more features and boy did they add them! Totally different game. Very impressed! Overall, beautiful game, tons of fun for free, and cheap for no ads! My only complaint is that most of the newly added disasters since I last played are hella OP and destroy half the planet or even the entire planet in one shot! Lol. It's still tons of fun and very satisfying. Highly recommend.
3 stars: There is like 8 billion ads every second and really laggy and miss the later versions when there was not that much ads, but aside from that this game is amazing but it is good that there is a why to get rid of the ads by paying for it. But please fix the lag.
2 stars: I really enjoy this game but the non-stop ads drove me crazy. You have to watch an ad to start a level, to end the level, to restart a level. It gets especially annoying when there are multiple levels where you can't win without watching several ads. I hope they fix this at some point cuz I really love the game.
2 stars: Ok game. Fun and addictive but does become repetitive quite quickly. Options are cool ...