Xenon 2 megablast need help

[Troglodit]

Hello all!
I want to remake retro game "Xenon 2 megablast" on Flash platform (you can get it here: http://www.abandonia.com/en/games/42/Xe ... blast.html)
Some progress Is done alredy but it is too slow to copy sprites from screenshoots.
Can you halp me please to extract the *.vga graphic files or to understand it structure.

Thank you

[chrrox]

Here is a scan of the file.


offset num description [bits.endian.size]
--------------------------------------------
000181c2 370 LZ Huffman decoding table [..256]
000182c2 1663 Huffman LZH d_len [..256]

- 2 signatures found in the file

seems like a compressed archive that contains the gfx data.