3 stars: It's somewhat annoying that I paid for an ads-free game only to be bombarded every three or four levels with pop ups anyway. Constantly being prompted to rate the game or connect it to my Google account is annoying. Not a deal breaker, but I very much wish it wouldn't keep happening. Other than that, it's a fun game. Fairly challenging but a nice time waster that makes you think. I would give it four stars if not for the pop ups issue.
5 stars: Simple to play, yet a totally addictive puzzle game. I prefer to play offline, with only the very occasional Google prompt asking to login via Google for additional bits (which I've ignored). Return to where you left off is easy, as is changing the game mode. I've been playing daily for about 4 days, off and on. Good graphics. Very good free puzzle game. 👍
3 stars: The majority of the levels are pretty easy, I wouldnt mine continuing it but I came online today ready to play and all it did was crash for no reason so I redownloaded it and my save data is gone even tho I did a back up on it. So I can't say I recommend a game as easy as this. Especially one that doesn't save your data even if it says so or occasionally ask me to save it manually and what's with these rubbish ads??
3 stars: The game is very well made and has the potential to be very interesting, BUT... the puzzles that you get at the start are very simple and extremely boring, and to advance to the more complex ones you have to pay money. Unfortunately...