Spirits of Mystery: The Silver Arrow Collector's Edition was developed for Mac users who are into playing hidden object games in their spare time. This special edition includes the challenges from the original game (Spirits of Mystery: The Silver Arrow) plus an additional chapter, a comprehensive strategy guide, wallpapers with artworks, and many others.
Some of the hidden object challenges are quite different from the ones I am used to. When playing other games of this type, your goal is to find missing items which are listed on an area from the screen; Spirits of Mystery: The Silver Arrow Collector's Edition offers you images which you need to include in the scene, or places they fit the best (for example, put flowers in a vase).
The app also features other types of challenges (for instance, matching mini-games), plenty of bonuses (coins which you can use to restore the tower of your castle), and many useful hints.
Another good thing about this game is the fact that you can always change the difficulty level (which you selected before starting the game).
Cutting a long story short, Spirits of Mystery: The Silver Arrow Collector's Edition is an entertaining and addictive game that can keep you in front of your Mac for hours. So, I'd say it's definitely worth buying for your Mac.