Former Valve writer Marc Laidlaw recently published several never-before-seen documents from the development of the original Half-Life on his personal website. You can read the documents from the links below. Marc retired from Valve early this year after working at the company for 18 years. For the past few months, as part of his post-retirement purge, he's been organizing his archives and looking for the occasional piece of information worth saving. Ending up with a stack of 3.5” floppy disks, he bought an external floppy drive and found several Half-Life development documents from 1998 on one of the disks. While not mentioned on his website, Marc also revealed that, for a time, the last section of the game was to take place inside a gigantic alien organism. Writing for Half-Life Created on November 9, 1998. Finale Created on June 4, 1998 and last modified on July 21, 1998. Nihilanth Created and last modified on July 21, 1998. Afterthought Overkill Created in 1998.