Starsky & Hutch Games: 11/01/2008

Name: Portal: Prelude

Description:
Portal: Prelude, as its name states it, is an unofficial prequel to the game Portal. Its story revolves around the pre-GlaDOS epoch, even before she was plugged in. At this time, test subjects were monitored by real Aperture Science employees whose work was tedious, lengthy and repetitive. This is why they decided to build a great artificial intelligence that could both replace them in these difficult tasks, but also take responsibility for many other tasks within the complex and compete with Black Mesa's superiority. All employees of the Aperture Science complex are now eagerly awaiting GlaDOS. Maybe even a little too eagerly, as the upcoming events will tell...

Source: http://www.portalprelude.com/
Download:

Before you install, please make sure you have the Steam Client installed along with Portal. Also make sure it has been launched at least once through Steam. All you need to do is to install Portal: Prelude to your "SourceMods" directory, inside of the "SteamApps" directory of Steam. Be sure to restart Steam after the installation. This will allow Steam to update your game list and include Portal: Prelude in it.

Requirements:

Steam
Portal

NOTE: Any PC that can run Portal should be able to run Portal: Prelude. However, to play the game with all visual effects on, the computer would have to be equipped with a high standard graphics card as Portal: Prelude is a bit more greedy than the original Portal. (mostly in the last levels)

Recommended configuration :

Processor: Intel Pentium 4 3000 MHz
Display Card: DirectX 9 compatible graphics card
Memory: 1024MB
Free Disk Space: 1.5 GB
Operating System: Microsoft Windows 2000/XP/Vista

Trailer:
The music is called Session, and is performed by Linkin Park.
You can find and buy it on their website : www.linkinpark.com.

(the trailer used to be in YouTube, but was muted due to a violation of authoral rights by WMG)