We all know what happens; Chell deactivates GLaDOS, gets put in extended relaxation only to be reawakened years later to fight again and escape. But what really happened in Aperture Science during the intervening years?

Have you ever wondered: Why does Aperture look so different in Portal 2? There are holes in this story, questions left unanswered! Conversion is here to fill some of these holes. You will see completely new locations of the Aperture Science facility, and use new testing elements. You will travel with new companions and encounter new foes.

Developed by

Based on the content of closed mod:


New "Lost Aperture" gameplay
Nonlinear plot
New characters
Solid storyline extending the Portal universe

Technical details:
The mod wil last in about 7-8 chapters. The demo that is comming 28 March 2014 there will be 1-st, 2-nd, 4-th chapters right from full release (the content may be pollished and redone after full release)
At the moment, demo is about 3 hours of playing time.

Full version of the mod will be released with the voice acting on three languages: English, Russian, German.

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Post comment Comments  (10 - 20 of 38)
Guest Feb 4 2015, 11:16am says:

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froakie10 Mar 14 2015, 4:06am replied:

late 2015

0 votes     reply to comment
kylesare57 Mar 15 2015, 6:27pm replied:

says in summary april 2014, obiously abbandoned

+1 vote     reply to comment
artinheaven Oct 4 2014, 6:04am says:

This looks really good. I'm looking forward to playing it.

+1 vote     reply to comment
RYANSUPERGENIUS1123 Aug 11 2014, 3:07pm says:

Long past March already. Still no demo available.

+1 vote     reply to comment
Guest Aug 25 2014, 5:15am replied:

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elijahlucian Jan 8 2014, 6:52pm says:

Hello, I am a voice actor with a full professional recording studio. I have been in many Skyrim and New Vegas mods, as well as a number of indie games. I would love to help you with voice acting for your project! Please send me an email: elijahlucian@gmail.com - check out my portfolio: Elijahlucian.ca

+5 votes     reply to comment
Guest Jan 25 2015, 5:48pm replied:

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dustojnikhummer Dec 24 2013, 6:37pm says:

why some chambers looks from portal 1 /doors,grids,cubes/ and some from portal 2?

-2 votes     reply to comment
Chapmic Dec 29 2013, 6:22am replied:

It's part of the plot. Read the summary.

+2 votes     reply to comment
dustojnikhummer Dec 24 2013, 6:36pm says:

how can be cameras acitve?

-2 votes     reply to comment
Guest Dec 15 2013, 2:58pm says:

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1 year ago
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