When downloading ROMs, it's essential to consider the legality and safety of the files. Make sure to:
A: When downloading from trusted sources, highly compressed PS2 ROMs are generally safe. However, always use antivirus software and scan files for malware.
For optimal storage on Android, CHD (Compressed Hunks of Data) is the industry-standard "highly compressed" format for
Most modern PS2 emulators for Android support CHD files natively.