Finding "highly compressed" PSP games under 200MB is a popular way to save space on Memory Sticks, but it often comes with technical hurdles. While many classic titles were originally small, others have been shrunk using "RIP" methods or specific file formats like CSO and DAX.

  1. Did you run the CSO through UMDGen to verify file headers? (Yes/No)
  2. Did you apply the specific game fix from the table in Part 4? (Yes/No)
  3. Is your PPSSPP I/O timing set to "Host"? (Yes/No)

Instead of using unstable "highly compressed" versions of large games, consider these titles that are naturally small and run perfectly: Angry Birds : ~15MB : ~50MB : ~30MB Pac-Man World 3 : ~150MB Burnout Legends (Rip version): ~160MB

If a game crashes during a specific cutscene, it’s likely because that data was deleted to save space. The only fix is to find a less compressed version or a full ISO. that naturally fall under 200MB?

  • Re-pack the ISO.
  • Run the CSO compressor. Set compression level to 2 (balance of speed/size).
  • Result: Many games (like Patapon or LocoRoco) drop from 500MB to 140MB.
  • Preservation & legal note

    Q: Can I play highly compressed PSP games under 200MB on any PSP firmware? A: Check the game's compatibility with your PSP firmware version before playing.

    To fix issues with highly compressed PSP games under 200MB (typically in CSO or ZSO format), you generally need to adjust your emulator settings or "re-dump" the file. Highly compressed files often suffer from slow loading times, stuttering audio, or "black screen" crashes because the hardware (or emulator) struggles to decompress data on the fly. Common Fixes for Compressed PSP Games