5 stars: The ads are awful but the game is so much fun to play. You learn a lot of new words and interesting facts. The only critique is that where the hint option etc is placed one easily hits it by accident and the game doesn't confirm that you want to use a hint so then you waste them when not needed due to the slip of a hand.
5 stars: This is a very fun little game I could sit and play for hours, including my fiancé when I feel stumped. Some of them are exceptionally difficult! I do hate the ads, though. They definitely get on my nerves, and I would love the option of removing them completely so I can just enjoy the game itself. Still a fun little game to play when I'm bored and feel like stretching my problem-solving muscles.
4 stars: Fun, addicting, BUT I'm getting annoyed that there's no time to read the fact
3 stars: It is a good game, it does not let you fix things easily when you make a mistake due to the function putting letters where you did not mean to because it jumps past letters it thinks you know. It will stop giving you automatic letter fill ins when you get advanced, then you will have to go bit by bit and fill in by hand, which causes tons of mistakes, where it freezes for 1 minute of ads every letter, which makes it completely unplayable.
2 stars: The game itself is actually quite fun, and hard/special puzzles are challenging without being frustrating. The issue is there is an ad EVERY TIME you want to do ANYTHING. New level? Ad. Restart ...