Too many ads

The game is easy and fun, and time flies by. I recommend it if you like puzzles. However, ads pop up in the middle of the game, and also at the beginning and end... ㅜㅜ So, even though there are quite a lot of ads, solving puzzles is fun. There are also many hidden quests!! A small tip is that among the buttons in the bottom left, there's one that lets you match the borders first, so if you start with that, it becomes easier ㅎㅎ