This game has such a rich atmosphere due to the art style, sound design, and post processing effects. Great work! I am not sure if this game has a lose condition, as I have not found it, nor a win condition.
The AI of the ghosts responding to the dog's light was very responsive and predictable, which made the game all the more enjoyable. Also I love the book's layout. Keeping it "simple" with no text and instead the silhouette when not captured, and the sprite when captured. It keeps the ghosts mysterious. I'm so curious why this lake (?) has so many spirits. Anyway I really liked this game!