The game is great fun, but after about 90 levels (which takes about a day to get to) they progressively get really difficult, and require coin to advance significantly again... Which prompts you to then purchase or wait out a few days til you've gained enough coin from the daily puzzles. A simple concept of match along the likes of mahjong. - Removed another star because I keep losing lives after the 30 minute timer is up, it resets to 0 lives!