Gamecube Rom Highly Compressed Verified Page

Almost never. Sites like romscompressed.com or coolroms. are notorious for:

Need help converting your own GameCube discs to RVZ? Refer to the official Dolphin Emulator documentation. gamecube rom highly compressed

A "highly compressed" GameCube ROM is not like a zip file you open and play. It is often a lossy or efficiency-focused container designed specifically for emulators. Almost never

An older format used by Dolphin before RVZ was introduced. It is still functional but generally less efficient than RVZ. What's the lightest compression format for Gamecube roms? gamecube rom highly compressed

New techniques are emerging: