3. Liberty City Police Department: First Response
https://www.youtube.com/watch?v=UMaw6NIUa8Q Retooling GTA IV as a law enforcement sim, the LCPD: First Response mod offers a look at life on the other side of the cops/robbers divide: sliding behind the wheel of a police cruiser, you'll patrol the streets of Liberty City doing everything from slapping the cuffs on drunken disturbers of the peace to issuing citations. Or if you find the pad-and-pen patrol a bit lacking in the 'splosions-and-gunfire department, fire up the roof and chase down armed robbers in blistering high-speed pursuits. With the addition of a partner you can even play out all your buddy cop fantasies. Backup is also available and can be called in at a moment's notice to assist with a variety of situations; arriving units will secure the perimeter and comb the area for suspects, with helicopters providing aerial support and additional firepower. With the full might of the LCPD at your fingertips, harassing harmless old ladies has never been more gratifying.