The file size for GTA Vice City Stories depends on the version. The most commonly cited original PSP ISO size is about 851 MB to 863.1 MB , while PSN/repacked downloads can be smaller or larger depending on compression and format.

Size by version

Version| Reported size| Source
---|---|---
PSP original ISO| 851 MB| 8
PSP compressed CSO/archive listing| 863.1 MB| 2
PSN Europe package| 641.55 MB| 3
PS2 version| 3.9 GB| 7

What this means

If you mean the original PSP release , around 850 MB is the best quick answer. If you saw a much smaller number online, that is usually a compressed fan upload , not the standard retail file size.

Bottom line

For a simple answer: GTA Vice City Stories is about 850 MB on PSP.