candy's_adv.dupe_pack_v1.zip

This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:

• steamapps
  • common
    • garrysmod
      • garrysmod
        • addons
          • Adv.Dupe Pack <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• Adv.Dupe Pack/
  • -candy- fun draw game.txt
  • -candy- super bi-plane_1.txt
  • -candy-skooter.txt
• Please Read!.txt

Imperial Fist, Yanыchar Mnogosёr, sjroberts2, Pork, ryana1350, pizzahutdaddys, NC|LautaroEzequiel.-., {[*애옹*]} - GODG̸͝, Snockza, Galahad, Alice (Bloody rabbit), animerychlicki0, ◄ƆARÐINAL►, Sol1 Mister X, Cyan, Ronnie Paints, Ze, sagar, DragonKiller (PavelCZ), MonkeyS0ul, Talloran, Demon, palextinizn, ningken, euphorbia, letop06, Chloe, ПЗРК, Maple, engi[POL], WhiteWolf, THE CHAD BOSTON MERCENARY, BlupBlup CSGOEgg.com, D-315, QuasarBarkas, Archy Bot, WillyHam, evil poptick gaming, evil poptick gaming, Renco, Renco, Renco, Uros Uki, Uros Uki, {SNF} RustRush, The Manx