ISO files, in the context of gaming, are image files that replicate the content of a game disc. For the PS4, these files can contain the entire game, including its data, similar to how a physical disc would. Essentially, a PS4 ISO game is a digital copy of a game that can be mounted or extracted to mimic the game disc, allowing players to play the game without needing the physical copy.
If you search for this term, you are likely looking for storage-friendly versions of these massive exclusive titles. Here is what a "highly compressed" conversion might look like: ps4 iso games highly compressed exclusive
are often scams or contain malware. Modern game assets (textures and audio) do not compress to that extreme without massive loss of quality. Piracy Concerns ISO files, in the context of gaming, are
If you want legal alternatives, I can help with any of the following: If you search for this term, you are
For users with modified (jailbroken) consoles looking to save space, specific tools exist to "rip" or "shrink" game files. These methods can significantly reduce file sizes, sometimes by over 50%. PKG Ripper / PKG Reaper