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.
Boss fights are where Garry's Mod tests everything you've learned. This guide covers strategies for bosses across all areas, organized by progression order. For general combat techniques, see our combat guide.
Boss Difficulty Overview
| Area | Difficulty | Recommended Build | Key Equipment |
|---|---|---|---|
| gm_construct | Easy | Trouble in Terrorist Town | Tool Gun |
| gm_flatgrass | Moderate | Trouble in Terrorist Town | Tool Gun |
| gm_bigcity | Hard | Sandbox | Physics Gun |
| rp_downtown_v4c_v2 | Very Hard | Sandbox | Physics Gun |
| ttt_minecraft_b5 | Extreme | Sandbox | Physics Gun |
gm_construct Bosses
Area difficulty: Easy Recommended level: 1 to 20 players Recommended build: Trouble in Terrorist Town with Tool Gun
Strategy
The first bosses teach core combat mechanics. Focus on learning patterns rather than dealing damage. Left click grabs a prop or ragdoll, the scroll wheel pushes it away or pulls it closer, and right click freezes it in place. This is your primary tool here.
Key tips:
- Don't rush. Learn the attack patterns first.
- Use Physics Gun handling to create safe windows.
- Tool Gun is enough to handle everything here.
gm_flatgrass Bosses
Area difficulty: Moderate Recommended level: 1 to 20 players Recommended build: Trouble in Terrorist Town with Tool Gun
Strategy
Early game bosses test your understanding of Tool Gun categories. Players who skipped learning this mechanic will hit a wall here.
Key tips:
- Tool Gun categories is critical for these fights.
- Farm Tool Gun upgrades if you're struggling.
- Consider switching to Trouble in Terrorist Town if your current setup isn't working.
gm_bigcity Bosses
Area difficulty: Hard Recommended level: 4 to 32 players Recommended build: Sandbox with Physics Gun
Strategy
Mid-game bosses are the major skill check. They combine multiple mechanics and punish players who rely on a single strategy.
Key tips:
- You need both Physics Gun handling and Lua gamemodes mastery.
- Physics Gun makes a significant difference. Get it before attempting these.
- See our combat guide for advanced techniques.
rp_downtown_v4c_v2 Bosses
Area difficulty: Very Hard Recommended level: 10 to 60 players Recommended build: Sandbox with Physics Gun
Strategy
Late-game bosses are serious challenges. Build optimization matters as much as mechanical skill.
Key tips:
- Make sure your build is fully optimized.
- Physics Gun at max upgrade is recommended.
- Study each boss's attack patterns. Most have 2-3 phases.
ttt_minecraft_b5 Bosses
Area difficulty: Extreme Recommended level: 8 to 32 players Recommended build: Sandbox with Physics Gun
Strategy
Endgame bosses are the ultimate test. They require mastery of all combat systems and an optimized build.
Key tips:
- Top-tier build with best-in-slot gear is mandatory.
- Master every mechanic. See our combat guide.
- These fights reward patience and pattern recognition above all else.
General Boss Tips
- Learn before you fight: Spend your first attempt observing attack patterns. Don't try to win on attempt one.
- Match your build: Some bosses favor certain builds over others. Don't be afraid to switch.
- Upgrade your equipment: A max-upgraded Physics Gun trivializes fights that seem impossible with weaker gear.
- Use Physics Gun handling: The core combat mechanic is your best defensive tool in every boss fight.
- Check the walkthrough: Our walkthrough tells you when you're ready for each boss.
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 Tips & Tricks
- Garry's Mod Weapons Guide
- Garry's Mod Combat 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 Boss Guide: sandbox game with similar mechanics
- VRChat Boss Guide: sandbox game with similar mechanics
- Tabletop Simulator Boss Guide: sandbox game with similar mechanics
