I have just finished the main game (took about a week) and thoroughly enjoyed it. I only used the clues three times (you get 15 for free); they will either tell you which location you should go to, or where to look in that location. The map is useful for going back and forth between locations (and you do need to go back and forth quite a lot), and in most places you will basically be told what you need to do. The mini-games are not too hard, and you only get ads at the beginning of a session!