It has been 9 months since the PC version of GTA 4 hit the market. I imagine like me many PC gamers have played it over and over again till we can do it in our sleep. So if you are looking for a "new" way to play GTA 4 then look no further than the new GTAIV Chain Game.
The chain game idea is basically a way for forum users to combine their efforts and complete GTA 4 to 100% as a group. Basically it works along the lines of doing a mission then uploading the group save, then someone else downloads that save and does a mission and uploads it again.
The GTAIV is being led by JAJ and girishb and they have done a marvellous effort setting all the infrastructure up. If this sounds like something you want to be involved in, then it is open to all GTAF members (pc only I am afraid). You can read more about the GTA IV Chain game here.
Related Link: GTA IV Chain Game
Related Link: GTA IV Chain Game Lounge