IN-DEPTH CREDITS
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99.9% of credits overall go to Valve, but to be more exact:
Garry's Mod - Original map, textures and other assets.
Half-Life 1 & 2 - Ladder climbing sfx and button sfx.
Portal - The radio music.
Team Fortress 2 - COCONUT.JPG
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P.S - is it valid to credit yourself for basically copying work of other people...?