Super Mario Galaxy Bowser Jr

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
          • Super Mario Galaxy <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• Super Mario Galaxy/
  • materials/
    • models/
      • marioragdoll/
        • super mario galaxy/
          • Bowser Jr/
            • bjkoopajr_body.vmt
            • bjKoopaJr_Body.vtf
            • bjkoopajr_Eye.vmt
            • bjKoopaJr_Eye.vtf
            • bjkoopajr_Eye2.vmt
            • bjKoopaJr_Eye2.vtf
            • bjkoopajr_Eye3.vmt
            • bjKoopaJr_Eye3.vtf
  • models/
    • marioragdoll/
      • super mario galaxy/
        • Bowser Jr/
          • bj.dx80.vtx
          • bj.dx90.vtx
          • bj.mdl
          • bj.phy
          • bj.sw.vtx
          • bj.vvd
          • bj.xbox.vtx
          • bj2.dx80.vtx
          • bj2.dx90.vtx
          • bj2.mdl
          • bj2.phy
          • bj2.sw.vtx
          • bj2.vvd
          • bj2.xbox.vtx
• READ ME.txt

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