Aerial shot of 5 humpback whales swimming near the surface.
Photo by Lance Barrett-Lennard and Ocean Wise under SARA permit.

Starting a retro gaming library for a Sony PlayStation system can quickly become overwhelming, especially when faced with thousands of duplicate files from different regions. A 1G1R Redump set is the gold standard for creating a clean, high-quality collection without the bloat. What is 1G1R Redump?

For the Sony PlayStation, this was a massive undertaking. The original library contained thousands of discs, including:

6. Recommended Final Workflow

  1. Download Redump PS1 DAT from redump.org.
  2. Acquire full Redump set (or your own dumps).
  3. Use igir with --prefer-usa --prefer-good --single to generate 1G1R.
  4. Convert all .bin/.cue → .chd (saves ~35% space).
  5. Import into DuckStation – scan CHD folder, enable “hide duplicates” (not needed if already 1G1R).
  6. Keep a copy of the original DAT + your 1G1R criteria for future updates.

6. Implementation: Creating a 1G1R PS1 Set from Redump

6.1 Tools Required

  • Redump DAT files (from redump.org/datfiles/) – for PlayStation.
  • ROM management software: clrmamepro, RomVault, or igir (recommended for 1G1R logic).
  • 1G1R preferences file: Defines region priority and revision logic.

Adam WarnereDNAhumpback whalesScientific Literature

Canada’s Policy for the Conservation of Wild Pacific Salmon

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1g1r Redump Sony Playstation ((install)) -

Starting a retro gaming library for a Sony PlayStation system can quickly become overwhelming, especially when faced with thousands of duplicate files from different regions. A 1G1R Redump set is the gold standard for creating a clean, high-quality collection without the bloat. What is 1G1R Redump?

For the Sony PlayStation, this was a massive undertaking. The original library contained thousands of discs, including: 1g1r redump sony playstation

6. Recommended Final Workflow

  1. Download Redump PS1 DAT from redump.org.
  2. Acquire full Redump set (or your own dumps).
  3. Use igir with --prefer-usa --prefer-good --single to generate 1G1R.
  4. Convert all .bin/.cue → .chd (saves ~35% space).
  5. Import into DuckStation – scan CHD folder, enable “hide duplicates” (not needed if already 1G1R).
  6. Keep a copy of the original DAT + your 1G1R criteria for future updates.

6. Implementation: Creating a 1G1R PS1 Set from Redump

6.1 Tools Required

  • Redump DAT files (from redump.org/datfiles/) – for PlayStation.
  • ROM management software: clrmamepro, RomVault, or igir (recommended for 1G1R logic).
  • 1G1R preferences file: Defines region priority and revision logic.