The game called "Spot Book" is exactly what you expect to find it. It is a game where your primary task will be to determine the difference between two similar images. But what makes this game so interesting and exciting is the fact that every image you'll need to study till their tiniest details are belong to hentai genre! In addition, among these hot girls doing a lot of cute things, you will see some familiar faces of your most loved heroines from popular anime series or videogames! You can consider this game a parody. It's not difficult to play even if you've already completed the other games!