3 stars: Not a bad game and can be quite addictive. But the developers really need to fix some bugs badly. It's really frustrating when the game dies when you try to use a booster. Sometimes it dies just because. Fix that and it would be worth at least another star.
3 stars: Addictive. Just the right pace and prompts to keep me playing round after round. Despite the addictive part, it ia actually kind of boring. Also repetitive.
4 stars: Fun game, inescapable ads on some devices. Basically the ads it's displaying are too large for the screen and no countdown / x visible
5 stars: Great game to play! You need to figure out the rules of the battle yourself, and levels are ordered in such way that they gradually teach them to you. You can play given level as many times as you want, testing your strategies and knowledge, and then you just win. And to you all complaining that there are too many ads on higher levels: clean the app data and play from level 1 again! Fun is the same!
3 stars: Like other users, I really enjoyed the first 200 levels. The boss fights are fun and challenging. But after a while some levels are impossible without using 3-5 powerups. That's more frustrating than fun. There are maybe 50 levels that repeat, but you control different planets, which is a lazy way to make it look like there are more levels.
5 stars: solid game play. the ai isn't great and the levels get a little repetitive after a hundred or so levels, but all in all, it does w...