Plays well, no glitches, 10 short easy levels. This series is a good intro to the genre for beginners, or a decent time-passer. Saves between levels, but if you leave the game mid-level you would resume at the start of that level. I like that it includes a 'skip' for every puzzle (if needed).
I removed a star because, although there aren't too many, there are those annoying full screen pop-up ads. Tolerable here, but the banner ad alone is sufficient. Thank you!