{
  "commit": "fbe5ba4e3e790ab07eddc5b57e0f45a02cbcd60e",
  "count": 1,
  "generated_at": "2026-10-24T00:06:47Z",
  "items": [
    {
      "id": "opengoal",
      "profile": {
        "core_classification": "game_engine",
        "core_version": "v0.3.8",
        "cores": [
          "opengoal"
        ],
        "display_name": "Jak and Daxter (OpenGOAL)",
        "emulator": "OpenGOAL",
        "files": [
          {
            "category": "game_data",
            "description": "Jak and Daxter: The Precursor Legacy PS2 disc image",
            "name": "jak1.iso",
            "note": "No file name is fixed. Accepted serials SCUS-97124, SCES-50361, SCPS-15021 and SCPS-56003, identified by the boot ELF name and its XXH64. Read once by the extractor, which builds out/jak1 for gk.",
            "required": true,
            "source_ref": "decompiler/extractor/main.cpp:295-335, decompiler/extractor/extractor_util.cpp:30-79, 278-294",
            "system": "opengoal",
            "unsourceable": "retail disc image the collection does not hold, and a same-named image of another game must not stand in"
          },
          {
            "category": "game_data",
            "description": "Jak II PS2 disc image",
            "name": "jak2.iso",
            "note": "No file name is fixed. Accepted serials SCUS-97265, SCES-51608, SCPS-15057 and SCKA-20010, identified by the boot ELF name and its XXH64. Read once by the extractor, which builds out/jak2 for gk.",
            "required": true,
            "source_ref": "decompiler/extractor/main.cpp:295-335, decompiler/extractor/extractor_util.cpp:80-123, 278-294",
            "system": "opengoal",
            "unsourceable": "retail disc image the collection does not hold, and a same-named image of another game must not stand in"
          },
          {
            "category": "game_data",
            "description": "Jak 3 PS2 disc image",
            "name": "jak3.iso",
            "note": "No file name is fixed. Accepted serials SCUS-97330, SCUS-97516, SCKA-20040 and SCES-52460, identified by the boot ELF name and its XXH64. Read once by the extractor, which builds out/jak3 for gk.",
            "required": true,
            "source_ref": "decompiler/extractor/main.cpp:295-335, decompiler/extractor/extractor_util.cpp:124-163, 278-294",
            "system": "opengoal",
            "unsourceable": "retail disc image the collection does not hold, and a same-named image of another game must not stand in"
          }
        ],
        "notes": "Native port of the Jak and Daxter games built from the decompiled GOAL\ncode. gk runs the game, goalc compiles GOAL source, and extractor turns the\nuser's PS2 ISO into the data gk loads.\n\nRetroBat installs v0.3.8: the gk.exe, goalc.exe and extractor.exe of its\nopengoal.7z are byte identical to opengoal-windows-v0.3.8.zip, and its data\ntree has the same files, so the profile is pinned to that tag. The\nlauncher reads the game name (jak1, jak2 or jak3) from the first line of\nthe ROM file, then checks data/out/<game>/iso. When that folder is missing\nit runs \"extractor.exe -g <game> -e -d -c <iso>\" with the ISO path set in\nthe system options, and refuses to start without one. It then starts\ngk.exe -g <game> with its own config folder.\n\nextractor (decompiler/extractor/main.cpp):\n  1. -e takes a file whose extension is .iso and which is larger than\n     1000000000 bytes, unpacks it into iso_data/_temp and computes an XXH64\n     over the hashes of all its files (decompiler/extractor/extractor_util.cpp:278-304,\n     decompiler/extractor/main.cpp:295-317).\n  2. validate needs a DGO folder in the extraction. It reads the serial\n     from the boot ELF name (SCUS_971.24 gives SCUS-97124) and hashes that\n     ELF with XXH64, then looks both up in extractor_iso_database\n     (decompiler/extractor/main.cpp:35-110, decompiler/extractor/extractor_util.cpp:30-166, 229-251). A missing DGO\n     folder stops extraction. Any other mismatch only fails the run under\n     -v, which RetroBat does not pass, and leaves the data in\n     iso_data/_temp instead of iso_data/<game> (decompiler/extractor/main.cpp:318-335).\n  3. -d decompiles with the config of the detected release, -c compiles\n     goal_src into data/out/<game>.\n\nThe database knows Jak 1 as SCUS-97124 (Black Label and Greatest Hits),\nSCES-50361, SCPS-15021 and SCPS-56003, Jak 2 as SCUS-97265, SCES-51608,\nSCPS-15057 and SCKA-20010, and Jak 3 as SCUS-97330, SCUS-97516,\nSCKA-20040 and SCES-52460. The contents hashes it stores are XXH64\nvalues over per file hashes, not hashes of the ISO file, so no entry\nbelow carries one.\n\nAt run time gk reads only what the extractor and compiler built:\nout/<game>/iso, listed by the fake ISO file system, and out/<game>/fr3\nfor the renderer (game/overlord/common/fake_iso.cpp:57-71,\ngame/graphics/pipelines/opengl.cpp:90). The data folder of the release\n(goal_src, decompiler/config, custom_assets, game/assets, launcher) is\nprogram source and configuration the compiler reads, shipped with every\nbuild. goal_src/jakx is present, but the extractor accepts only jak1, jak2\nand jak3 at this tag (decompiler/extractor/main.cpp:16-18, 289-292).\n",
        "profiled_date": "2026-10-20",
        "source": "https://github.com/open-goal/jak-project",
        "source_commit": "6445b4a50a7540df512e3c82c62216521421410c",
        "systems": [
          "opengoal"
        ],
        "type": "standalone",
        "upstream": "https://github.com/open-goal/jak-project"
      }
    }
  ],
  "kind": "emulators",
  "schema_version": 1
}