Open your emulator, point the game directory to the newly extracted .iso file, configure your virtual PS2 BIOS, and launch the game. Important Safety Warning
Full, retail PS2 games typically range from 1.5GB to 4.7GB. Due to the nature of PS2 file structures, it is impossible to compress a full retail game (like God of War or GTA San Andreas ) into a working 100MB file without stripping it down to essentially nothing.
Standard ISO files contain raw, uncompressed data, including "dummy files" used to fill physical DVD space. Advanced compression algorithms like LZMA, Deflate, and ZSTD scan the data and compress it without losing a single byte of game code. Converting an ISO to a .chd (Compressed Hunks of Data) or .cso (Compressed ISO) file can significantly shrink file sizes while remaining directly readable by modern emulators. 2. Ripping and "Trimming" Data
To get a file under 100MB, lossy compression or data stripping is often required. Rom hackers "rip" non-essential assets from the game. This usually involves:
Once extraction is complete, ensure the resulting file is in .iso format. Do not be surprised if your 90MB download transforms back into a 1.5GB to 4GB file on your hard drive. Step 4: Load into the Emulator
Modders remove heavy audio tracks, background music, multiplayer modes, and uncompressed pre-rendered cutscenes (FMVs).
Removing non-essential files like FMV cutscenes, background music, or multiple language tracks.
Note: If your computer fans start spinning loudly and the progress bar moves slowly, this is normal. The CPU is working hard to rebuild the heavily compressed data back into a standard .iso format.
: To hit these tiny sizes, "rippers" remove all audio and video files, leaving only the bare gameplay code and basic assets.
Right-click the downloaded archive and select "Extract Here." Look at the resulting file extension: