# Jump to index table f.seek(index_offset)

But here’s the problem: modern Windows doesn’t open PK2 files. Double-clicking does nothing. So what do you do when you need to extract that one weapon texture or edit a quest script?

In this post, I’ll walk through the PK2 format, write a lightweight Python extractor from scratch, and show you how to unpack those archives in seconds. After reversing a few sample PK2 files (and thanks to open-source community notes), the format breaks down like this:

for _ in range(num_files): # Read index entry (adjust offsets/sizes based on your game) name_offset, file_offset, uncompressed_size, compressed_size, flags = struct.unpack( "<IIIII", f.read(20) )