Why ?
In January 2008, I was searching for a new project. Portal was out since four months, and still, no-one had already did something really serious around it. I was following a lot a communities, seeing a lot of independant releases, but no mod and no serious story arc. This I why I decided to launch this project.

How ?
At start, the project was rather insignificant. It was not supposed to be a mod (modification of a game), but just a succession of test chambers, without any real logic between each of them. I had no goal, I was just making maps as I saw it. And finally, when I reached a dozen of test chambers, I realized that I would be a shame to waste all my work by only releasing yet another map pack without any real story. This is where I began to write a whole new story and decided to follow the famous belief that prequels are somewhat popular recently.

What ?
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...

Who ?
My goal was to make it a personnal project, without telling anyone about it. I wanted to surprise everyone by releasing a quality, polished and fully finished game, offering roughly the same amount of playtime than Portal. As months passed, I had more and more difficulties to keep working regularly on it. In real life, I'm both a student and an employee, and that didn't left me a lot of time to work on the game. This is where I decided to ask for some help, mainly from Jérémy "Capitaine Mousse" Barbe, who helped me by making four of the nineteen test chambers while I was working on the final level. Marc "Moroes" Bidoul helped me too, by making a few 3D models and textures.

How long ?
Eight months. Not eight month of continuous work of course, but eight month with some days filled with dozens of hours of hard work. I worked on the nineteen test chambers for 3 to 4 months, followed by 2 months on the final level, and 2 months of tests, debug, and polishing (interfaces, voices, commentaries, etc.). I must confess that it took me a lot more time than I initially thought, mainly because I had exams and work to do on behalf.

And after ?
In June 2008, I learned as everyone else that Valve was working on an official prequel of Portal. I must say that I was mostly the only guy on Earth not really happy by this announce. So, I decided to work twice as hard to release my version way before Valve's one. I hope that they will not take it too personnally, because mine was in development 5 months before their announcement.

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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 third place! Surprinsigly enough, we also managed to beat the most acclaimed mods of 2008, including nearly every mod that got into Steam during the year.

  1. Project Reality (Battlefield 2)
  2. Zombie Panic: Source (Half-Life 2)
  3. Portal: Prelude (Portal)
  4. First Strike (Battlefield 2142)
  5. Zombie Master (Half-Life 2)
  6. Pirates, Vikings and Knights 2 (Half-Life 2)
  7. Eternal Silence (Half-Life 2)
  8. Age of Chivalry (Half-Life 2)
  9. Stargate Empire at War (Starwars Empire at War)
  10. Half-Life 2: Wars (Half-Life 2)

I must say that I'm really happy with the results, it's kind of the best place ever for a little mod like ours that grew up rapidly from nowhere with a really small team but a really big motivation. It wouldn't have been fair to finish first or second regarding the amount of work and devotion put into some of the mods out there. Some of them who recreate everything from scratch and build something during years with sometimes hundreds of people. That's why I'm happy to be third!

I must say that our little team is quite proud of this result! After all, it proves that even if we crossed a terrific jungle of insults, harsh criticism and mockery, we managed to please the people at which this mod was first aimed: all-time Portal fans, hardcore challenge-looking players and a few of them who thought Portal: Prelude was cool enough to buy Portal once and for all (no joke here, I could cite you some e-mails I received).

Thanks to all our fans, to all the people who helped us and tried to help us in any way (e-mails, voices, forums, scores, bugfix, etc.), and thanks to all the people who sent us feedback via e-mails, comments, discussion boards or our forums. Thanks for the hundreds (maybe thousands) of e-mails to tell us your experience, your disappointements and your best moments. We couldn't reply to everyone (even if I tried to reply to at least 70-80% of them), but I can assure you we read everything.

Check our "meet the team" page to see all the people who really helped us.

Portal: Prelude 1.1.5 released!

Portal: Prelude 1.1.5 released!

News 14 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 1.1.0 released!

Portal: Prelude 1.1.0 released!

News 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 Released!

Portal: Prelude Released!

News 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...

Day One : The Trailer

Day One : The Trailer

News 26 comments

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

RSS Files
Portal: Prelude 1.1.5 (archive version)

Portal: Prelude 1.1.5 (archive version)

Full Version 51 comments

All the files needed to make Portal: Prelude run. This version is exactly the same than the "installer" version except that it works better for Mac OS...

Portal: Prelude 1.1.5 (complete installer)

Portal: Prelude 1.1.5 (complete installer)

Full Version 149 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 1.1.5

Portal: Prelude 1.1.5

Full Version 8 comments

This mod by the Portal: Prelude Team is the prequel to the Portal game. Features include more gameplay hours than the original game, 8 chapters, 48 challenges...

Comments  (0 - 10 of 404)
ScotisHedgehog77
ScotisHedgehog77

The new Steam Deck UI update for Portal pretty much breaks Portal: Prelude now. Now at the very end of the last level, Just as soon as the end credits start, the game straight up crashes. Also, the subtitles are now bigger, due to Portal's updated ClientScheme.res and font files... I really hope that sometime in the future, the Portal: Prelude team, will acknowledge this, and hopefully make a patch for it to work with the latest version of Portal.

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oyqea-ntrtaynmnt-llc
oyqea-ntrtaynmnt-llc

"I really hope that sometime in the future, the Portal: Prelude team, will acknowledge this, and hopefully make a patch for it to work with the latest version of Portal."

Sorry, but they stopped supporting the mod in 2010, only coming back in 2013 with the Steampipe patch. So, I doubt they'll return unless absolutely necessary.

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Guest
Guest

I don't know how to fix the credits glitch but I fixed the large font size by editing the ClientSceme.res file inside of of Portal Prelude and cutting the subtitles font size in half. Doesn't look as smooth as normal but at least it's not covering half of my screen.

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oyqea-ntrtaynmnt-llc
oyqea-ntrtaynmnt-llc

Good to know.

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ltpezwez
ltpezwez

can someone tell me what the electric beam things are called that shock you. they light up

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oyqea-ntrtaynmnt-llc
oyqea-ntrtaynmnt-llc

They're simply called Electricity Fields, and the chambers they appear in are replicas of chambers from Portal: The Flash Version, in which they first appeared.

They also appear in The Flash Version's official mappack adaptation, and make their only official appearance in Portal: Still Alive.

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Guest
Guest

can someone tell me what the electric beam things are called

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oyqea-ntrtaynmnt-llc
oyqea-ntrtaynmnt-llc

Electricity Fields

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Portal_2_Player
Portal_2_Player

Hold up, why did this randomly appear at the top of the portal mods category?

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Guest
Guest

No idea. Just to clarify, this is not because I’m working on the 15th anniversary edition, I just don’t know how it got up here.

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oyqea-ntrtaynmnt-llc
oyqea-ntrtaynmnt-llc

Just to clarify that comment I posted was me. I just forgot to log in.

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