This download looks like a map. You need to place it in your maps folder inside the Garry's Mod folder.
You should end up with a directory structure similar to below
Don't know where the Garry's Mod folder is or how to extract zip files? See more useful installation tips.
masascuate666, cartoonantlionguard, Trains882, Feggit, alinpetre343, Gerg, (✯-●, prototipo58345517, Noookia, dimitrijevuckovic026, alfredodestructor10, Geralt z Rivii, alinpetre333, kelvin.walker.2006, atasasmaz01, remix1872275, hasantahag1, edgarsgrivins, mv, KineticOreo, OlivieUserGamer228, Gerocraft2019, chochin7675, Aslow, Braixy, DanielsStark, RojoSebas_85, Saheeli Raji, Shadow, themanhacc, Nekyto, general_stealth, vampirates21, azov_wars, playtime4468, playtime4468, Zugar16, videla1, rest in pepperoni, Mr. Vorpat, BetoncuReis, ultima_sword, belizariosilvad, GabeXXII, 12345, zigortfurkan, ElChamoSinJuegos TwT, banettetejode.yt.2.0, banettetejode.yt.2.0, Harambe Uchiha +234 others
