This app is a special edition of the Spirit of Revenge: Elizabeth's Secret game. By installing it on your Mac, you gain access to the main story from the aforementioned game plus an additional chapter, screensavers and wallpapers with images from the app, soundtracks, and many others.
The story revolves around the maid of honor of queen Elizabeth whose objective is to find a young boy that's been kidnapped by a dark shadow. You will be accompanied by a funny character called Francis, explore numerous scenes, and solve various puzzles. On your way, you will collect clues that will come in handy in finding the kid.
I like the fact that the hidden object mini-game doesn't bring you a list of items which need to be found. Instead, it displays images with the objects you need to locate and you can find them by clicking over various items from the scene (for example, you need to open a drawer to find a statue).
Another great aspect about this game is that you can always check the built-in strategy guide for assistance. Also, there's a journal where all important notes are saved.
To sum things up, it's definitely worth buying Spirit of Revenge: Elizabeth's Secret Collector's Edition if you're into solving riddles and hidden object mini-games. This app brings you captivating plot, amazing graphics and animations, and many hours of gameplay.