Extra Science
PuzzleYou Subject [REDACTED] are assigned to the ASHPD Advanced Test Track. Will you survive?
Only a single test with the save file. To install, put the .bsp in your Portal Maps folder, and put the .sav and .tga files in your Portal Saves folder.
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You Subject [REDACTED] are assigned to the ASHPD Advanced Test Track. Will you survive?
Return to Aperture Science, overrun by a rogue Combine AI with little patience and murderous intent. Solve puzzles that will challenge your three-dimensional...
Portal: The Second Slice is a mod that aims to remake concepts from the lost “Core Hub” era of Portal 2 in Portal 1 and extending on them.
The Evil Core has taken over GLaDOS and plans to use her weapons to destroy the world! As the last person alive in Aperture, it is your duty to stop him...
152 other test subjects couldn't do it. Is there any hope for you? Will you die during the test? Will someone come for you? Will something happen? Will...
Quanta is a full conversion mod for Portal that re-imagines the game in a new universe, based heavily on the 2005 in-development style of the game. Play...
hey dingus u didnt upload the file
Great job you are a moron who dosen't how to use moddb.
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there is no file?.