Garry's Mod is a sandbox of possibilities, and the right addons decide what your server becomes. Here are the staples — admin tools, build tools and the most popular gamemodes — for 2026, plus how to keep a heavily-addoned server running smoothly.
Quick answer
The essential Garry's Mod server addons in 2026 start with ULX (with ULib) for admin, then build tools for sandbox servers and a gamemode — DarkRP, Trouble in Terrorist Town (TTT), Prop Hunt or Murder — that decides what your server is. Load addons through a Workshop collection and serve them with FastDL so players join quickly.
Garry's Mod is really a platform: the gamemode and addons you pick decide whether your server is a roleplay city, a social-deduction lobby or an engineer's sandbox. Below is the toolkit most successful servers share — admin, a gamemode, depth addons and content delivery — plus how to keep a heavily-addoned server fast.
ULX + ULib — admin essentials
The classic admin suite: bans, kicks, gags, group permissions and a clean admin menu. ULX (on top of ULib) is the first thing most server owners install to actually moderate their server. Pair it with a permissions addon so your moderators get exactly the powers you intend and nothing more.
Pick a gamemode
The gamemode defines everything else. These are the four that draw the most players in 2026:
| Gamemode | What it is | Best for |
|---|---|---|
| DarkRP | The iconic roleplay gamemode — jobs, economy, endless addons | Big RP communities |
| TTT | Trouble in Terrorist Town — social deduction, still huge | Rotating casual lobbies |
| Prop Hunt | Hide-and-seek as props | Low-effort casual fun |
| Sandbox / Sandbox+ | Free building with extra tools | Builders & Wiremod fans |
Setting up your first DarkRP server
DarkRP remains the most-searched Garry's Mod gamemode by far. If you're starting from scratch, our how to set up a GMod DarkRP server guide covers the base install before you start layering on jobs and addons.
Wiremod + ACF — for builders
Wiremod adds programmable contraptions (logic, sensors, screens); ACF adds realistic armour and ballistics. On build and sandbox servers, these two are what keep engineers engaged for hundreds of hours.
PAC3 — player customisation
PAC3 lets players build custom outfits and accessories on their models — huge on RP servers for immersion and character identity.
Content & quality of life
- CS:S content / map content packs — fix missing textures (the purple-and-black checkerboard).
- VManip / enhanced animations — nicer first-person interactions.
- Discord integration — link your server and community.
- A FastDL setup — fast addon downloads on join.
Workshop collections and FastDL
Two systems get addons to your players. A Steam Workshop collection tells the client which addons to subscribe to; a FastDL host serves the actual files over HTTP so joining doesn't mean a ten-minute in-game download at Source's slow default speed. Set up both — Workshop for the list, FastDL for the delivery. If addons or textures aren't loading for players, see our GMod addon fix.
Keeping a heavily-addoned server performing well
Garry's Mod runs on Valve's Source engine, whose game tick is single-threaded — so raw core count matters far less than high per-core CPU clock. Lua-heavy addons (Wiremod contraptions, DarkRP job scripts, PAC3 outfits) all add work to that one tick. Keep it fast:
- Run on a high-clock CPU — GMod cares about GHz, not core count.
- Trim unused addons and keep your Workshop collection tidy; every subscribed addon is parsed on join.
- Watch server tick rate as the list grows — a server that lags under fifteen players almost always has an addon conflict, not a hardware limit.
- Disable or replace any addon that spikes the tick; test additions on a private copy before pushing to the live server.
Basic exploit and admin protection
A public Garry's Mod server, especially DarkRP, attracts exploiters probing for money or item duplication bugs. Keep ULX permissions tight, update addons regularly, and see our game server security checklist for the broader steps every public server should take.
ULX to moderate, a gamemode to define the server, Wiremod/PAC3 for depth, and CS:S content + FastDL so everything loads cleanly. That's a complete GMod server.
GMod servers want a fast CPU and a good FastDL setup. Our Garry's Mod hosting supports Workshop collections and FastDL out of the box.
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