This is an exact digital copy of an entire optical disk (CD, DVD, or Blu-ray). In this context, it allows users to play the prototype on emulators or modded original hardware without needing the physical disk.

By making the ISO region-free, it becomes accessible to a global audience, regardless of whether they own a console from the original region of the prototype's development.

In gaming, "region-free" means the software bypasses the digital locks typically placed on hardware from specific regions, such as North America, Europe, or Japan.

Analyzing these files provides a "behind-the-scenes" look at the development process of a game or application.