The most efficient initial step is the removal of dummy data. Many games (e.g., Rise of the Robots or various RPGs) contain gigabytes of padding.
If you only download three games from this list, make them:
To compress your games, download the latest chdman.exe (found in MAME releases). Create a simple batch file in your PS2 game folder containing the command: for /r %%i in (*.cue, *.iso) do chdman createcd -i "%%i" -o "%%~ni.chd" Run the batch file, and chdman will scan all subfolders, automatically converting every ISO into a much smaller CHD. Highly Compressed Ps2 Games Under 500mb
After scouring the retro community, these are the most stable and enjoyable titles that fit into a 500MB envelope.
Use or PS Plus Premium – they stream PS2 games directly. Zero storage required. The most efficient initial step is the removal of dummy data
These games are either naturally small or highly compressible, offering a fantastic gaming experience without hogging storage space.
Half-Life (Approx. 400MB)One of the most impressive technical feats on the console, this port of the PC classic fits comfortably under the 500MB mark. It includes the full single-player campaign and the exclusive co-op expansion, "Decay." Create a simple batch file in your PS2
: These often have non-essential files like "dummy" data, extra languages, or low-quality cutscenes removed.