A good concept let down by some issues.
The game progresses using cutscenes with some quick-time events thrown in to keep the player's interest. This isn't so much a game as it is just a five hour long machinima. When you do actually control a character it turns into a kind of adventure game where you have to interact with your surroundings using gestures, such as dragging down the mouse to pull open a door. While these gestures provide a small amount of immersion, they come off as tedious when you're put under the pressure of a time limit, which happens often during the game. The quick-time events are performed with eight lights that are shown and you have to keep up by pressing the corresponding keys. This degrades the game's quality because not only do they come off as misplaced and awkward, they distract you from some of the game's best action moments and since this is a 'movie' that's not a good thing.
The story starts off as your average murder mystery but a couple of hours in the story will turn towards an ancient Mayan cult and a mysterious power called the 'Chroma' which is just the smart man's way of saying the 'Force' without getting sued. In short, the plot progresses fairly well but be prepared for insanity that only anime can rival.
Indigo Prophecy was a good original concept but it would have been better if it were just an hour long cutscene with no interactivity what-so-ever. You should at least try it.