PSP Game Download Sizes: What to Expect

PSP game sizes vary wildly — from 50 MB to 1.8 GB. There is no single answer. It depends on:

Genre/Asset Density: Visual novels / puzzles (small) vs open-world / FMV-heavy (large).
Compression: CSO (compressed ISO) saves 30–60% vs raw ISO, with minor load time cost.
Audio/Video Quality: Games with lots of voiced cutscenes (Metal Gear Solid: Peace Walker ~1.4 GB) are larger.

Representative Examples (ISO Size)

Game	Size (ISO)	Size (CSO)
Patapon / LocoRoco	~200 MB	~80 MB
Lumines / Puzzle Games	~100–300 MB	~50–150 MB
God of War: Chains of Olympus	~900 MB	~450 MB
Grand Theft Auto: Liberty City Stories	~1.1 GB	~600 MB
Metal Gear Solid: Peace Walker	~1.4 GB	~700 MB
Final Fantasy VII: Crisis Core	~1.3 GB	~650 MB
Kingdom Hearts: Birth by Sleep	~1.8 GB	~900 MB

Storage Planning

4 GB Memory Stick Pro Duo: 2–4 large games, or 10+ small.
16–32 GB (via MicroSD + Adapter): Full library comfortable.
PSN Store Listing: Always shows exact download size before purchase.

Tip: Use **CSO compression** (via PSP ISO Compressor / MaxCSO) on your PC before transferring to save space with negligible performance hit on most titles.

PSP Games