Facepunch Studios released Garry's Mod on November 29, 2006, built on Valve's Source engine and sold with no objectives at all in its base mode. By November 2024 it had sold 25.56 million copies, which makes it the best selling PC exclusive game ever released. Almost everything people actually play in it, from Trouble in Terrorist Town to DarkRP, is Lua written by the community rather than by Facepunch.
These tips go beyond the basics. They're the strategies experienced players use to play more efficiently, the hidden mechanics most people miss, and the optimizations that compound over a full playthrough. If you're just starting, check our beginner's guide first.
Essential Tips
1. Install and mount Counter-Strike: Source before you touch the Workshop
Install and mount Counter-Strike: Source before you touch the Workshop. A large share of popular maps and addons reference its textures and models, and without it you get purple and black checkerboards plus floating ERROR text where props should be.
2. Freeze props with right click as you place them
Freeze props with right click as you place them. Unfrozen props drift, fall and knock the rest of your build apart, and pressing R unfreezes everything at once when you actually want it live.
3. Build in constraint order: weld the frame first, then attach wheels, thrusters or balloons
Build in constraint order: weld the frame first, then attach wheels, thrusters or balloons. Adding force before the structure is joined tears the contraption apart the moment it moves.
4. The Weld tool has an adjustable breaking force
The Weld tool has an adjustable breaking force. Set it low deliberately when you want a part to snap off under load, and set it high on anything that carries the weight of the build.
5. Use the Duplicator, or the community Advanced Duplicator 2 on servers that run it, to save a working contraption
Use the Duplicator, or the community Advanced Duplicator 2 on servers that run it, to save a working contraption. Rebuilding a machine from memory after a physics failure is the most avoidable time sink in the game.
6. In Trouble in Terrorist Town, identify every body you find
In Trouble in Terrorist Town, identify every body you find. An unidentified body tells nobody anything, while a confirmed kill starts a chain of evidence that a Detective can scan and act on.
7. Detective credits are best spent on the DNA Scanner early rather than on armour
Detective credits are best spent on the DNA Scanner early rather than on armour. Proof of a traitor is worth more to your team than one player surviving a round.
8. On DarkRP servers, read the rules page before you spawn anything
On DarkRP servers, read the rules page before you spawn anything. The New Life Rule, building rules and raid rules are enforced by admins rather than by code, and breaking them gets you banned faster than any in game mechanic can punish you.
9. As a Prop Hunt hider, choose a prop that already appears in the room you plan to sit in
As a Prop Hunt hider, choose a prop that already appears in the room you plan to sit in. A lone traffic cone in an office is spotted instantly, while a fourth chair among three chairs takes a full round to find.
10. Subscribe to a server's Workshop collection rather than a hundred unrelated addons
Subscribe to a server's Workshop collection rather than a hundred unrelated addons. Conflicting Lua from mismatched addons is the most common cause of long load times and of the errors people blame on the game itself.
Advanced Strategies
Build Optimization
The difference between an average build and an optimized one is massive. See our builds guide for full breakdowns.
For Sandbox (A-Tier):
- Focus on Physics Gun handling combinations for maximum output.
- Core gear: Physics Gun
- Stat priority: Offensive stats first
For Trouble in Terrorist Town (A-Tier):
- Versatile approach that handles any situation.
- Core gear: Tool Gun
- Stat priority: Balanced stats
Mechanic Interactions
Understanding how Garry's Mod's systems interact is where the real optimization lives. Our combat guide covers this in detail.
Physics Gun handling + Tool Gun categories: Left click grabs a prop or ragdoll, the scroll wheel pushes it away or pulls it closer, and right click freezes it in place. Combined with Tool Gun categories, tools sort into constraints such as weld, rope, axis, ball socket, hydraulic, motor, muscle, pulley, slider and winch, construction such as balloon, thruster, wheel, hover ball, dynamite, emitter, no collide, remover and duplicator, plus posing and render groups.
Lua gamemodes + Steam Workshop addons: A gamemode is a Lua folder that redefines rounds, roles, weapons and interface. When paired with Steam Workshop addons, workshop replaced the old toybox system in version 13, so addons install by subscribing rather than by dropping files into the addons folder by hand.
Mounting other Source games scaling: Garry's Mod pulls models and textures from other Source games you own on the same account. Without Counter-Strike: Source mounted, a great many popular maps display purple and black checkerboards and floating ERROR text where props should be.
Equipment Efficiency
| Equipment | Best Use Case | Why |
|---|---|---|
| Physics Gun | Every build, every ragdoll pose, and rescuing anything that has fallen through the world. | The blue gravity tool that grabs, moves, rotates and freezes props and ragdolls. |
| Tool Gun | Turning a pile of frozen props into an actual machine. | The multi mode tool that carries every constraint, construction, posing and render function. |
| Weld tool | Building any chassis or frame before thrusters, wheels or balloons are attached. | A constraint that fuses one prop to another prop, a wall or an entity, with an adjustable breaking force so joints can be made to snap under load. |
| Thruster tool | Rockets, hovercraft and anything that needs directional force on a key press. | Attaches a numeric keypad controlled thruster to a prop or wall, with adjustable force and effect. |
| Wiremod | Automated machines, working vehicles with instruments, and anything that needs to react rather than just move. | The best known community addon, adding logic gates, sensors, screens, keypads and expression processors as Tool Gun modes. |
Location Efficiency
gm_construct (1 to 20 players): One of the two maps that ship with the game and the most recognisable location in Garry's Mod. Flat build areas, a pool, a tunnel and a small skybox room cover almost every sandbox need.
gm_flatgrass (1 to 20 players): The other default map, an enormous empty grass plane with a small structure at the centre. The lack of geometry is the point: nothing interferes with a large contraption.
gm_bigcity (4 to 32 players): A large urban sandbox map with driveable streets, multi storey buildings and interiors. It is a common home for vehicle addons and for roleplay servers that want something wider than a downtown block.
rp_downtown_v4c_v2 (10 to 60 players): The standard DarkRP map that most servers still run. A compact downtown block with apartments, shops, a police station and sewers, all sized for the job and property systems.
ttt_minecraft_b5 (8 to 32 players): A long serving Trouble in Terrorist Town map built from blocky Minecraft style geometry, with sightlines and hiding spots tuned for the traitor round rather than for building.
Mistakes Even Veterans Make
- Playing without Counter-Strike: Source mounted, then blaming the game for ERROR signs and checkerboard textures.
- Attaching thrusters before welding the frame, so the contraption shreds itself on the first key press.
- Forgetting to freeze props during a build, then losing an hour of work to one stray collision.
- Killing on suspicion in TTT without identifying bodies first, which reads as random deathmatch to everyone else.
- Subscribing to hundreds of unrelated Workshop addons and creating Lua conflicts that break the spawn menu.
Pro Quick Tips
- Install and mount Counter-Strike: Source before you touch the Workshop. A large share of popular maps and addons reference its textures and models, and without it you get purple and black checkerboards plus floating ERROR text where props should be.
- Freeze props with right click as you place them. Unfrozen props drift, fall and knock the rest of your build apart, and pressing R unfreezes everything at once when you actually want it live.
- Build in constraint order: weld the frame first, then attach wheels, thrusters or balloons. Adding force before the structure is joined tears the contraption apart the moment it moves.
- Start with Trouble in Terrorist Town, switch to Sandbox when ready
- Invest in Physics Gun above everything else
- Clear areas in order: gm_construct → gm_flatgrass → gm_bigcity → rp_downtown_v4c_v2 → ttt_minecraft_b5. See our maps guide
- Physics Gun handling + Tool Gun categories together are stronger than either alone
More Garry's Mod Guides
- Garry's Mod Garry's Mod Overview
- Garry's Mod Best Builds
- Garry's Mod Tier List
- Garry's Mod Walkthrough
- Garry's Mod Beginner's Guide
- Garry's Mod Weapons Guide
- Garry's Mod Combat Guide
- Garry's Mod Boss Guide
- Garry's Mod Maps & Locations
- Garry's Mod Crafting Guide
- Garry's Mod Classes & Characters
Similar Games
If you enjoy Garry's Mod, check out these related guides:
- Terraria Tips & Tricks: sandbox game with similar mechanics
- VRChat Tips & Tricks: sandbox game with similar mechanics
- Tabletop Simulator Tips & Tricks: sandbox game with similar mechanics
