Highly compressed Dolphin games work by utilizing specialized file formats—most notably —that strip away "junk" data or apply advanced algorithms to reduce file sizes without sacrificing gameplay performance. While standard compression like ZIP or 7z can be used for storage, they are generally not "seekable," meaning the Dolphin Emulator cannot read them directly during play without a massive performance hit. How Highly Compressed Dolphin Games Work
Highly compressed games "work" by utilizing several data-reduction techniques: Removing Junk Data dolphin games highly compressed work