4 stars: This game is good fun to play, and the ads are at a bare minimum (they pop up during the intermittent load screens, but can be skipped through easily). The only thing that ruins the game for me is a lack of any guide for the various weapons and special abilities - you can quickly understand the basics, but an FAQ or guide would seriously help
3 stars: Would be 5 stars, but it keeps forcing the game to go to the menu with no option to continue play on level 17, round 2. It's waisted money purchased for in game upgrades. It's a very fun game, but I won't waste anymore time or money until it is fixed.
4 stars: Absolutely love this game, it never gets old. It has exactly the right balance of challenge and excitement. the only difficulty I experienced was when I paid to remove ads and two days later had started playing again.
5 stars: HI ! 1st really good game. 2nd : levels from #5 are too \
4 stars: Very good tower defence game!! The app remembers where you are, so you can continue at any time. The only flaw is that you can't skip the advertisements and the ads are 30 sec. long
5 stars: I've only been playing for a few days and am on level 5. It was challenging from the first level (on normal difficulty. Haven't tried easy yet although I might bc it took awhile to get past level 4). I've really enjoyed the game so far. The only ads are between levels, not annoying like so many games.
4 stars: This game is for high level TD players!... I almost did...