Is an awesome, free homebrew game engine and source port of the classic PC first person shooter Duke Nukem 3D.
homepage @: http://www.eduke32.com/
Duke Nukem 3D: Atomic Edition was released in November 1996 as an upgrade to the original version of Duke Nukem 3D (v1.3d). There was also an update patch known as the Plutonium PAK that upgraded v1.3d of the game to v1.4.
download Duke Nukem 3D: Plutorium PAK (copy it near exe) @: https://github.com/zear/eduke32/blob/master/polymer/eduke32/duke3d.grp
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