The US Police Dog: Crime Chase Duty Simulator game lets you take on the role of a real-life, four-legged version of a police officer. With all the different missions, criminals, and other players, it's a lot like being a real cop dog in the city. You can sniff out criminals, help your partner arrest criminals, and even catch one yourself. In order to do that, you'll have to have a keen sense of smell. 

The game is about dogs and police, so if you're not into that, you won't really love it. However, if you are into dogs and police, you'll definitely love this game and the different levels of play. It's a very good game that you can play for free.