For everyone who played and loved and probably replayed the smash hit Portal, a few plucky developers are making their own free mod of the game. And unlike other Portal mods that are just map packs (such as the 3D version of the flash game) this is a full fledged prequel with a pre-GLaDOS storyline.
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…
Since Valve is expanding the Portal franchise on their own, they are working extra hard to launch this free mod. We expect Portal: Prelude to be released by the early October.