Mystery Trail is a perfect choice for players who look for a challenge. The route is clearly set as well as the order of quests. However, its exact form is unknown to players. They can only see one quest which has to be found and solved. In case their answer is correct, the next main point will appear on the map. If they answer incorrectly, the application will send them to a penalty point. They need to try to solve it (no matter how) to get back to the original route.