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|“Oh! That's--that's amazing.”
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There is a lot things we don't know about this mod, please expand
9.1 on ModDB
Same as Portal
Gamma Energy is a mod released on ModDB based on Portal in which the player enters Aperture Science to be tested in a series of chambers where GLaDOS may not harm the player.
Gamma Energy's start animation is not compatiable to newer Steam version so if you throw it in sourcemods it will can't boot up.