There are certain things most people expect from a free Google Play game. #1- few or no ads. Your game averages 1 ad every 6 minutes. #2-not forced to accept an item or a "tool" that will help me in the game. Puzzles can be tough. Sometimes you just need time to ponder and think, use the other half of your brain . But forcing players to accept something makes me feel like you think I can't eventually figure it out. As if players are stupid.