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.
_.dxsenchxnted._, Derpy´s, modality, masascuate666, TrekFryerAlpha, 毛巾666, judel3isda, Kuroda, ExtraMustard76, MrMoyer19, You're Aren't, You're Aren't, You're Aren't, Destiny Wolf, iWambat, EdgyBanana, navarronahuel769, Grawlix, Mr.FantasticShot, JJTuges, overlordjimi, Cuteravegirl47, NIBAS, [RwB]|✪$v3rn1k^™✪, EV3, Space Miller, dhaizen2, FaultyDwarf, dasda, fares.dares, Alpha Doge, Rabesquiend, DoggoBorkBork, KayneKros2003, Whiterun Guard, ][RipTide][, mayerlin_240, razi, hermione, Sven, Dragon2019, deonklopper997, Motorcharge, Shneelah, Yahron, SirDono, Mr.Black, joshuaturner, Ghost_FakeBG csgolive.com, ^4Fb||^1Useless upgrade.gg +270 others
