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Portal: Revolution

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Header Portal Revolution.jpg
Portal: Revolution

Second Face Software

Release date(s)

January 6, 2024[1]


First-person shooter, Puzzle video game




Windows, Linux


Keyboard and mouse




Stefan Heinz, Dr. Doozer[2]


Jared Poolaw

Portal: Revolution is a free single-player modification for Portal 2. It is set before the events of the original game, in the dead and decaying Aperture facility.


Between the events of Portal and Portal 2, an unnamed Test Subject is woken up by an unknown voice. She finds herself a candidate for the "Aperture Science Human Response Team" - in order to be hired, she needs to go through a testing track. The subject succeeds, only to find out that the voice is a Personality Core named Stirling, and that there's no actual Human Response Team. Stirling reveals that his intention is to use a powerful device to restore Aperture Science, which is rapidly falling into ruin. After traversing Aperture's back areas and overgrown Test Chambers, the duo manage to reach "the Spire" - a massive structure capable of teleporting matter anywhere in the facility, which Stirling plans to use to reconstruct GLaDOS and restore her to power.

When they test the device, the Spire succesfully teleports a Companion Cube, but when the test subject tries it herself, the teleporter malfunctions, and she eventually finds herself alone, stuck at the bottom of the facility. Wandering around the abandoned facility, the test subject accidentally activates another Personality Core - Emilia Conly - an Aperture neuroscientist who copied her mind as part of 1980's brain mapping experiments. They traverse old test chambers together, while Conly uncovers the truth about what happened to Aperture Science in her absence. When the duo reach New Aperture, they once again meet with Stirling. Emilia chooses to oppose Stirling's plan of rebuilding GLaDOS, knowing she had killed the rest of the Aperture Staff.

After the subject and Conly makes its way across more dilapidated chambers, Stirling tries to kill them, intending to rebuild Aperture no matter what. The duo reach the Spire and fight to disable it, while Emilia reveals Stirling had originally been a vacuum cleaner. They succesfully shut down the Spire and foil Stirling's plan, but the device subsequently explodes.

In a post-credit scene, it is revealed that the exploding device teleported the subject and Conly to the Moon. The female core puts the wounded subject back in stasis, this time on a Aperture Science moon base.


The campaign contains 40 brand new puzzles making use of both new and existing mechanics including the resurrected Pneumatic Diversity Vent, a new Discouragement Redirection Cube variant, the Gel Cleasing Field and over 15 puzzles using only the blue Portal Device. The expected playtime is around 5 to 7 hours.[3]


Portal: Revolution uses a modified version of Strata Source, a third-party branch of the Source engine.[4] This allows the usage of many mechanics and improvements to the engine impossible in the original game.[3]


Portal: Revolution has received overwhelmingly positive reviews from players on Steam, with 95% of 10,564 reviews (as of January 26, 2024) being positive.[3]

Morgan Park of PC Gamer also praised the mod, saying that "[Portal: Revolution] is so good that I'm sad Valve stopped making Portal all over again", though he criticised the character of Stirling for being dry, and "mostly a retread of Portal 1's corpo-dystopian humour".[5]


The plot point of Stirling trying to rebuild GLaDOS is an attempt to fix an apparent continuity error - at the end of Portal, GLaDOS' remains are seen laying outside in an Enrichment Center parking lot, fragmented into many pieces. Yet, in Portal 2 she is seen back in her chamber, still being mostly intact and able to function properly.



External links[edit]