5 stars: This is simply an awesome and addictive game! I've just completed level 720 and have no intention of quitting. I'm in my 60s and feel this game helps me think more clearly and more methodically, and it's just plain fun. Bonus: the vast majority of ads displayed can be clicked off immediately or after 5 seconds. Kudos to the developer(s)!
4 stars: I love playing this game just when you think it's too easy, you get stuck! It probably could be a little harder to be honest but all in all a good game... Haven't had any glitches or anything either.
4 stars: 1. It doesn't start getting interesting until level 100 2. The levels of play aren't consistent after 100 3. I'd like to see more than 4 balls per glass 4. There are a lot of colors to choose from, so I'd to see levels with different hues of the same color, to mix it up.
3 stars: This game frequently interrupts in the middle of your sort process with a 30 second ad, which is fine, except it also resets the round to the beginning with a completely different set of balls. Very frustrating, especially if you're just about to finish the sorting round. ☹️
3 stars: I just started this game, and I'm having a blast! I uninstalled the first ball sort game I chose because of too many ads. So far, ads in this game are not intrusive. I haven't even seen one yet, at level 28.
2 stars: Way, WAY too many ads. If I'm slamming my head against a particular puzzle, I may need to start the puzzle often, which means yet ...