KBH Games features large collection of online Mystery Games. We have over 55 online Mystery games in our collection. The best part is that all the games you see are free of charge. We have Mystery Games fun for the entire family. All games are either Flash, Shockwave, Unity 3D, WebGL, or HTML5. Browse through our collection and see what cool games you'll discover. If you like a game, give it a thumb's up and add it to your favorites. New Mystery Games are added regularity. We strive to bring you the best online gaming experience. Here are a few Mystery online games we recommend SpongeBob SquarePants: The SquarePants Mysteries, Ben 10 – Alien Device, Ben 10 The Mystery of the Mayan Sword, and Fright Night – Gravity Falls.