In the emulation community, "highly compressed" usually refers to converting raw .ISO files into specialized formats that emulators like or NetherSX2 can read directly without unzipping.
: A common alternative for compression that many modern emulators also support. Safety & Setup Guide Ps2 Iso Highly Compressed For Android
(or NetherSX2) is currently the gold standard for PS2 emulation on Android. You must have a legal BIOS file to boot the emulator. Extraction Tool: to unpack the compressed files. A device with a Snapdragon 845 or higher is recommended for stable framerates. How to Set It Up Get your compressed ISO from a trusted source. You must have a legal BIOS file to boot the emulator
To play these files, you’ll need a reliable emulator. Note that while some "highly compressed" files are sold as "no-BIOS needed" apps, official emulators typically require a separate BIOS file for legal and performance reasons. AetherSX2 / NetherSX2 How to Set It Up Get your compressed
None of this works without the engine. For a long time, PS2 emulation on Android was a joke. Then arrived and changed everything.