there are 2 complete games on Episodes From Liberty City The Lost And Damned and The Ballad Of Gay Tony its on the same city as GTA IV but a different point of view of the story with new characters...
No you can't buy clothes on GTA IV,TBOGT or TLAD
Yes, the disc verison and download version is.
i dont know stupid
no, it is installed onto your hard drive by default and so it would be illegal for most rental stores to rent this out to people