Marc Laidlaw explains

“We tore the game to pieces” Half-Life writer Marc Laidlaw explains why Valve rebuilt the classic FPS[/size]

https://www.pcgamesn.com/marc-laidlaw-talks-half-life
Y mas
https://www.marclaidlaw.com/writing-half-life/

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.