The PS1 library is massive (over 2,400 titles). For game preservationists, storing thousands of ISOs requires terabytes of space. Compressed formats like (PlayStation Portable format) or CHD (Compressed Hunks of Data) are now the gold standard.
Could developers create a good compression format for PS1 games? Ps1 Highly Compressed Games
And it worked. The world of Midgar loaded in fifteen seconds flat. No music on the world map. Cloud’s sword was a gray rectangle. When he cast “Summon,” the screen just flashed green and subtracted MP. But the dialogue was intact. The battle system worked. He cried when Aeris fell, even though her death scene was just two text boxes and a soft beep. The PS1 library is massive (over 2,400 titles)
resolution. Highly compressed games must still interact with the PS1's affine texture mapping Could developers create a good compression format for
Distributing or downloading full game ISOs without the right to do so may violate copyright law. Using compressed versions of games you own for personal backup or on legally owned hardware/emulators varies by jurisdiction—check local law and respect developers’ rights.