This is the specifications for the archive file which is handled by the Game Extractor plugin Archive_GT1G0600_GT1G0600.

Endian Order:Little Endian
Compression:none
Encryption:None


This format is used by the following Games:
Ninja Gaiden Sigma *.gt1g0600


This is the format specification information:
 
// HEADER
  8 - Header (GT1G0600)
  4 - Archive Length
  4 - Header Length (176)
  4 - Number of Images
  4 - Unknown (10)
  152 - null
  
// DETAILS DIRECTORY
  // for each image
    4 - Image Data Offset (relative to the start of the Details Directory)
  
// IMAGE DATA
 // for each image
   2 - Unknown (272)
   4bit - Image Height [2^x]
   4bit - Image Width [2^x]
   1 - null
   4 - Unknown (2166784)
   X - Image Data (BGRA)


These are the accompanying notes and further information:
 
Image width/height are like this...
0101 0101 = 32*32
0111 0111 = 128*128
0010 1010 = 4*1024
1010 1011 = 1024*2048


Game Extractor is able to read files of this type, as well as files from thousands of other games. To give it a try, download Game Extractor (Basic Version) for free, and see what it can do.

For further information on this format, refer to the source code on our GitHub repository.