For Android emulation, three main compressed formats dominate the scene:
Do not extract your compressed ROMs. Leave them as .chd or .cso . If you extract them to a folder, you will take up 4x the space, defeating the purpose. ps2 roms highly compressed for android
For these reasons, the best path is unequivocally NetherSX2. For the most seamless experience, you should search for the latest version of NetherSX2 from its official GitHub repository. For Android emulation
You need the scph39001.bin (or similar) BIOS file. Without this, nothing runs. Search for "PS2 BIOS pack for Android" – these are usually 4MB in size. defeating the purpose.
For these reasons
: Emulators read CHD files directly without unzipping. Savings : Cuts file sizes by nearly half. 2. CSO (Compressed ISO)