From ZhugeEX:
Metal Gear Solid series sales in USA. Below is packaged unit sales.
MGS: ~2.5m
MGS2: ~2.2m
MGS3: ~1.5m
MGS4: >2m
MGS5: ~1m
Includes sales for PlayStation platforms + Substance, Subsistence & bundled sales. (Re-releases or digital not counted ofc)
Now worldwide sell in-
MGS: 7m+
MGS2: 7m+
MGS3: 4m+
MGS4: 6m+
MGS5: 5m+