I was searching online for additional Space Hulk material, and I came across something called the Space Hulk Bible. (A google search for "Space Hulk Bible" will find the PDF in a number of different places).

I haven't read the whole thing yet, but from what I have read, I can't tell how much of it is newer fan made material, and how much of it is older, official Space Hulk 1st ed rules.

For example, the rules in it for Eldar, Terminator Captains, Space Marines in Power Armor, Grey Knights and for Imperial Guardsmen looks pretty legitimate.

But the rules for additional types of Tyranids looks like it could not have been made by GW (it includes rules for many 'nids that didn't exist until Space Hulk was way out of its first edition).

So, does anyone know where all of the Space Hulk Bible's material comes from?