It was stolen along with the source code of the Source engine by Axel Gembe, a German black-hat hacker.
The Half-Life 2 Beta, or 'Leak' as it is commonly referred to as, is an unfinished build of Half-Life 2 from 2003. I've been in the Beta community for a number of years and I am currently an admin on several prominent Beta communities, so I hope this qualifies me to speak about it.
This guide is intended for absolute beginners who may be interested in getting the Half-Life 2 Beta up and running.
