Buy a used PS3 copy of Uncharted 3. This grants you the legal right to the data.
An ISO is a disc image. In the world of emulation, users "dump" their own physical game discs into this format to play them on a computer. Uncharted 3 Pc Download Torent Iso
If a PC version were to be released or emulated: Buy a used PS3 copy of Uncharted 3
Since there is no native PC port, gamers use PS3 emulators to run the original game files. This is the primary reason why "ISO" files are sought after, as they are digital replicas of the original game disc. In the world of emulation, users "dump" their
Naughty Dog has stated that the original PS3 trilogy (Uncharted 1-3) has not been ported due to aging visuals that would require significant rework to meet modern PC standards. How to Play on PC (Emulation)