In the world of Wii emulation and homebrew, "highly compressed" refers to taking a standard 4.37 GB disc image (ISO) and stripping away the "junk" or "padding" data that Nintendo included to ensure discs read properly on physical hardware.
: Developers filled the empty space on discs with "dummy" files or junk data to push important game files to the outer edge of the disc, where the laser reads faster. highly compressed wii games
If you don't want to rip your 100+ disc collection, look for or "WBFS" archives on the Internet Archive or Reddit窶冱 r/ROMs Megathread. These are already highly compressed. In the world of Wii emulation and homebrew,