5 stars: You can spend money, but you don't need to. You can get a good amount of gameplay for free before you hit a wall (I've at least unlocked the 2nd world so far, still going). It doesnt force you to watch ads, but the rewards for watching the (lots of) optional ones are decent
5 stars: It pretty cool game. I love dogs that's one of the characters you get to make it attack👿👿👿☠. Don't get me wrong I know a good country cat will let a pit know he tangled with it for a long time long time. 🐈‍⬛
4 stars: The gameplay mechanics are great. Combining tower types is a great ability that sets this game apart from other tower defense apps. I haven't felt any need to purchase anything so far in order to win, so that's a win. The downside is the grammar; sometimes the English translation is so bungled that you can't understand the directions. Doesn't make much of a difference on gameplay though, just makes the game feel cheaper.
3 stars: Initially good free to play, disappointing progression. Eventually enemies become so strong you cannot deal with them without grinding advertisements or replays or swiping your credit card and buying stronger heros/pets. Pay to win for sure. You'd have to grind for like 200 hours to unlock something good without paying for it. No thanks.
3 stars: Extremely fun at the initial stages but i don't like how the game gets harder to the point of being impossible and have to spend to win unlike Kingdom rush where you can win just by skill...