CVG's posted a mission-by-mission walkthrough of GTA IV, if you're interested. Be warned: this really does lay out the entire story on a single page, so don't blunder onto it after two hours sleep and ...

This page contains cheats and secrets in Grand Theft Auto 4. Some of the most exciting of these GTA 4 cheats can be entered by bringing up Niko's cell phone and dialing in the numbers. Once entered ...