A guest post from GeekTeen John Ceceri: Garry’s Mod (GMod) is a program made by Garry Newman that allows you to manipulate the Half-Life and Source engine games. If you’ve ever searched “Half-Life” on ...
If you've been having trouble with Garry's Mod lately, specifically the error, "Unable to shade polygon normals," don't take it to the Steam forums. You can solve that issue rather easily -- by buying ...
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