While Call of Duty 3 was originally released for the PlayStation 2 on a single-layer DVD with a file size of approximately , "highly compressed" versions found online often promise sizes under 1 GB. However, these are frequently non-functional or contain "dummy" files that have been stripped, potentially causing game crashes or performance issues.
: Some "rips" remove non-essential data like dummy files (used to speed up disc reading) or compress FMVs to significantly lower the footprint, sometimes bringing games down to a fraction of their original size for storage purposes. How to Use Compressed ISOs call of duty 3 ps2 iso highly compressed