Garry's Mod - Invasion, Steam Trading Cards Wiki

Garry's Mod - Wikipedia

Steam Workshop::TOP 50 GMOD ADDONS #2

Yes, Garry's Mod is playable in the Steam Deck, even though Valve says it's unsupported!

Steam Workshop::Gmod Ultimate Nostalgia Collection

SMOD Sweps addon - Garry's Mod - Mod DB

Garry's Mod - Movie Maker, Steam Trading Cards Wiki

Steam Workshop::GMOD Stuff

Garry's Mod Steam Locomotive (Northern Class)

I found out that you can download Garry's Mod 10, 11 or 12 for free if you own the current version in your Steam Library. Fired up Gmod 10 and made this. : r/gmod

How to Add Workshop Collections to Garry's Mod