It's a wide, wild web out there.

• BoardGameGeek Entry for Space Hulk - It's only fitting that the game that started it all would be first on the list. In addition, if the simple explanation of the rules in the NetHulk README isn't enough, you can always get more information and hints from the Space Hulk website.
  
  
• SpaceHulk-SP - If you want to play human opponents, then play NetHulk, of course! But what if you want your Space Hulk fix and there's nobody around? Then play SpaceHulk-SP, a fun single player adaptation of the Space Hulk game.