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Asobo Save Game File Format Specification
This is the save game format used in FUEL. Other games have different formats. Saves are located in %USERPROFILE%\Documents\My Games\FUEL
this directory contains one subdirectory for each GFWL profile name, where the name of the subdirectory is the same as the name of the profile. Each of these subdirectories contains a single FUEL_SAVE_V14.sav
file which is the save game for that profile. Note that save games use the Alternate CRC-32 algorithm and not the primary one. For more information about the compression used, see the Asobo Arithmetic Coding Compression entry.
struct SaveGame
{
std::uint32_t xliveHeaderSize;
// Always 4
// Written by xlive
std::uint32_t saveGameDataCRC32Checksum0;
// Alternate CRC-32 Checksum of saveGameData taken as a raw byte buffer
// Equals saveGameDataCRC32Checksum1
// Written by xlive
SaveGameData saveGameData;
// 199996 bytes
std::uint32_t saveGameDataCRC32Checksum1;
// Alternate CRC-32 Checksum of saveGameData taken as a raw byte buffer
// Equals saveGameDataCRC32Checksum0
};
struct SaveGameData
{
std::uint32_t dataCompressedSize;
// Includes the sizes of dataCompressedSize and dataDecompressedSize
std::uint32_t dataDecompressedSize;
std::uint8_t data[dataCompressedSize - 4 - 4];
// dataCompressedSize and dataDecompressedSize are part of the compressed data so we subtract their size from the data array
// Data is compressed using Asobo's Order 1 Arithmetic Coding
std::uint8_t zeros[199996 - dataCompressedSize - 1];
// Filled with 0x00
// Used to pad the SaveGameData structure size to 199996 bytes
std::uint8_t version;
// Always equals 61
};
For FMTK Users and Mod Developers
For FMTK Developers
Asobo BigFile Format Specification
Asobo Classes
Animation_Z
Binary_Z
Bitmap_Z
Camera_Z
CollisionVol_Z
Fonts_Z
GameObj_Z
GenWorld_Z
GwRoad_Z
Keyframer*_Z
Light_Z
LightData_Z
Lod_Z
LodData_Z
Material_Z
MaterialAnim_Z
MaterialObj_Z
Mesh_Z
MeshData_Z
Node_Z
Omni_Z
Particles_Z
ParticlesData_Z
RotShape_Z
RotShapeData_Z
Rtc_Z
Skel_Z
Skin_Z
Sound_Z
Spline_Z
SplineGraph_Z
Surface_Z
SurfaceDatas_Z
UserDefine_Z
Warp_Z
World_Z
WorldRef_Z
Asobo File Format Idioms
Asobo CRC32
Asobo LZ Compression
Asobo Arithmetic Coding Compression
Asobo Save Game File Format Specification
Asobo Audio Formats
TotemTech/ToonTech/Zouna/ACE/BSSTech/Opal Timeline
Zouna Modding Resources
Miscellaneous