Platform: Windows XP
License: Function limited demo
Number of downloads: 2609
Like its predecessor, you take the role of Gordon Freeman, and this time earth is infested with aliens. It was your fault (remember Black Mesa?) and now it's down to you to rescue everybody.
This demo features some of the earlier levels of the game, and gives you a preview of a later area known as Ravenholm.
You will need to register for a Steam account in order to play the game; simply follow the on-screen instructions to get one.
Note: If you don't have a broadband connection, don't bother downloading this demo. It's a huge file.