This is the specifications for the archive file which is handled by the Game Extractor plugin Archive_PAK_3.

Endian Order:	Little Endian
Compression:	None
Encryption:	None

This format is used by the following Games:

Arx Fatalis

*.pak

This is the format specification information:

4 - Directory Offset X - File Data // Directory 4 - Unknown 5 - Unknown X - Path 1 - null Path Terminator 4 - Number Of Files // for each file X - Filename 1 - null Filename Terminator 4 - File Offset 4 - Compressed Length 4 - Decompressed Length 4 - File Length

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.