In the context of the PS2 scene, a "ripped" game (often referred to as a DVD RIP in the early 2000s or simply a "shrunken ISO" today) is a game image that has been altered from its original 1:1 copy.
A standard PS2 DVD can hold up to 4.7 GB (and dual-layer discs up to 8.5 GB). A "ripped" version aims to reduce this size, often by removing unnecessary data.
It is important to distinguish between two types of compression:
If you own the original disc, creating your own rip using tools like DVD Decrypter + UltraISO (to manually remove dummy files) is the best practice.
Dispositivos modernos que leen ISOs desde una microSD conectada al puerto de memory card (segundo slot). Es económico y rápido, ideal para PS2 Slim.