GM_Mobenix_v01

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
          • gm_mobenix_v01 <-- Addon folder!
            • e.g.
            • lua
            • maps
            • materials
            • models
            • etc

• gm_mobenix_v01/
  • maps/
    • gm_mobenix_v01.bsp
  • materials/
    • maps/
      • map_gm_mobenix_v01.vmt
      • map_gm_mobenix_v01.vtf
  • ReadMe.txt
  • screenshots/
    • gm_mobenix_v01_1.jpg
    • gm_mobenix_v01_10.jpg
    • gm_mobenix_v01_11.jpg
    • gm_mobenix_v01_2.jpg
    • gm_mobenix_v01_3.jpg
    • gm_mobenix_v01_4.jpg
    • gm_mobenix_v01_5.jpg
    • gm_mobenix_v01_6.jpg
    • gm_mobenix_v01_7.jpg
    • gm_mobenix_v01_8.jpg
    • gm_mobenix_v01_9.jpg
  • settings/
    • maps/
      • gm_mobenix_v01.txt
  • whats coming in Next Version/
    • build_offroad40000.jpg
    • build_offroad40002.jpg
    • build_offroad40004.jpg
    • Whats that.txt

34rs_impress, mimod17, kostiangamer, LevelHard123, ivan0009ru, MrGhost, ♥Emibriel//, Василий Канчий, TOYBONNIE_FIVE_NIGHTS, matheussantanasantiago1.0, ansiritsa, FranekPLAYGames, ahmedahmed1273913, maxxadams2005, kvazquez953, shadzstar, David Smerečynskyj, TheRock, s.sasha204, Homer922211111, santitug, graslukasz, minhchxhcn, davidbrandaomedeiros, adi8020, MichałRokĆwok, x_tamakuu_x, alphavacamanuelll1, bradobedencio, gabrielhill98, gabrielhill98, gabrielhill98, datar1990, [email protected], joawnai, Zeus221, seby_nike18, Vaxal2115, Ssakson, umutyildirim2009, Inkling Salzo, Julian Van, MrAdri16, fightherot, TheLolx, CJmckay1202, J4nk5004 | gamekit.com, J4nk5004 | gamekit.com, francogallardo2006, GMod_geek_cat +116 others