GTA IV code leaked
Oh dear. A rip of the Xbox 360 version of GTA IV appears to be on Usenet. Although you can't play this on a retail Xbox, as far as we know, it should run on a debug.
Reports are coming in that people have downloaded it and have it running.
Checking Rockstar for comment now.
Update: Sorry, apparently this will run on a modded 360 as well.