A "highly compressed high quality" ISO (or WBFS file) of Super Smash Bros. Brawl is a modified version of the original game file designed to take up significantly less space on a hard drive or SD card, without sacrificing the core gameplay experience.
Many players worry that high compression ruins game quality. In the past, heavy compression meant removing cutscenes, stripping audio tracks, or downgrading textures. Super Smash Bros Brawl Highly Compressed High Quality
The Subspace Emissary campaign contains hours of high-quality cinematic videos. A "highly compressed high quality" ISO (or WBFS
A 7.93 GB ISO can often be compressed into a download package of just 4.5 GB to 5.5 GB . heavy compression meant removing cutscenes