5 stars: It's difficult enough to feel rewarded and easy enough not to feel frustrated. When something goes wrong, you know it was your hast. The game doesn't having moving objects that cheat, like most of my other games. You only have to watch ads if you want coins or extra tubes. It's fun with just the two tubes you start with, you don't need the coins at all. Perfect, simple strategy game. No annoying music or sounds; 5 stars!
4 stars: The rule of thumb is: if you found out about an app thorough ads, the app is going to be filled with ads. Ads between every single stage, ads of your switch apps, ads to be able to move, ads for everything. I think it's profitable otherwise nobody would be doing it. But the game is ok. Simple but cool.
4 stars: Love the game, hate the free-to-play ads. The strategy is fun and surprisingly difficult. Each level is unique, and the surprise levels are super fun. I recommend this game to anyone who enjoys a classic puzzle. Unfortunately the free version has long ads everytime you restart a level, and half the ads take you directly to install viruses. My AdBlock had to kill tabs the ads opened several times. I don't want to pay a subscription fee.
3 stars: Ads are bad enough, but these people can't even figure out how to make ads that work on their game so you constantly have to force stop and restart to get out of an ad that has an exit button configured out of frame It's such a small thing to fix, and such a detraction from game pla...