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, and 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... This game is totally free. It offers a bit more gameplay hours than the original Portal, with 8 chapters, 19 test chambers, 48 challenges, 6 advanced maps, a brand new storyline and more than 400 lines of english speech with dozens of subtitles translations.

Day One : The Trailer

Day One : The Trailer

Sep 15, 2008 26 comments

Here we are, Day One. The trailer is up and running.

Portal: Prelude Released!

Portal: Prelude Released!

Oct 8, 2008 26 comments

That's it! Portal: Prelude is released! Thanks to FilePlanet and Planet Half-Life, you can now download the game one day before the official release date...

Portal: Prelude 1.1.0 released!

Portal: Prelude 1.1.0 released!

Oct 30, 2008 29 comments

Portal: Prelude 1.1.0 released! This new version is shipped with more than 80 bug fixes and additions, along with slightly easier first levels.

Portal: Prelude 1.1.5 released!

Portal: Prelude 1.1.5 released!

Feb 1, 2009 12 comments

This new version is shipped with more than 115 bug fixes, improvements and additions (since 1.0.0). We know everything's still not perfect, but we believe...

Portal: Prelude wins third place at MoTY

Portal: Prelude wins third place at MoTY

Mar 2, 2009 2 comments

Ok, that's right, it's a kind of big surprise. After 114,000 votes, Portal: Prelude didn't win the ModDB's Mod of the Year Awards, but made it to the...

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Platform
Windows
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Portal
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Official Page
Portalprelude.com
Release Date
Released Oct 8, 2008
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