I really was enjoying the puzzles! They were very relaxing for the first 3-4 puzzles I did. After that about every 4-6 puzzles pieces I placed a ad interrupted the puzzle. Once finished i started where I left off. Then once again after 4-6 puzzle pieces ANOTHER ad interrupted the puzzle! I kept working on the puzzle hoping it would stop but it never did! I understand the need for ads and I'm normally very patient with them but I mean come on every 4-6 puzzle pieces is extreme! I'm uninstalling!