Ads were not too intrusive. Game is aesthetic and flows nicely most of the time, definitely worth the purchase. Some nitpicking: This game has some serious hard puzzles. Without the hint mechanism I'd be lost. Unfortunately the hint mechanism sometimes will flat out tell you the answer instead of lead you to understand the answers on your own.

Excellent game. I reduced 2 stars for having loud and unmuteable ads

מעולה! אחד הטובים. חידות מעניינות ובלי יותר מדי פרסומות