If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Drive around the city in your police car and try to hurry up and park it near the building where a robbery is taking place. Then you will have to play a mini-game where you can use your Taser gun to catch all the thieves. As you progress in the game, the levels will become more challenging, so try to collect as many coins as possible and buy some very cool upgrades that will help you keep up. Have a wonderful time playing this amazing game!