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.

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The voice acting annoyed the hell out of me.

But apart from that it's not too bad.

you should bring this to valve and get ellen mclain(GlaDOS) and other actors and make it an official game

great mod

This is a very interesting mod with a satisfying story for the events preceding Portal. I agree the voice acting wasn't the best and most of the test chambers were ridiculously difficult and not very rewarding. It took me half a year to find the strength to finish this mod. But the ending was nice, creative, unique, and fitting.


UrExWife says

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Amazing game. The puzzle where really challanging! Really fun gameplay and very nice modeling/reskining. The only problems I found with the mod was that it could use better lipsyncing and voice acting. Sounds like everyone is bored. Even during the chaos GLaDOS is causing. Other then that. Awesome mod!


amirmu12345 says

May contain spoilers 0 agree 0 disagree

I farted on my television remote.

Nicely done. The ending is cool as well.

This is probably one of the best mods I've ever seen!... so far. I love the story of GLaDoS here. But one slight thing. Do you think you can change the name of one of the observers to Doug Rattman. He was the scientist who survived the Neurotoxin so why not include him. Other than that, great work!

One of the Coolest Portal mods ever! The other cool one is Project Beta. But anyway, This is really cool! Like with you after chamber 18 walking around the office-part of Aperture. It's cool, but not giving away anything else!

Awesome mod, and the story is great too, it perfectly fits portal.

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