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Garry's Mod

Complex physics sandbox is daunting but rich

Learning rating

Community rating

Based on 2 reviews

Privacy rating

Expert evaluation by Common Sense



Subjects & Topics


Price: Paid
Platforms: Linux, Mac, Windows

Pros: Tons of user-generated content, realistic physics, and deep customization options make every playing session feel fun and new.

Cons: A steep learning curve and some violent content limit classroom accessibility.

Bottom Line: This physics sandbox ramps up the complexity but not the usability, leaving it up to the right teachers and students to unlock its benefits.

Teachers can use Garry's Mod (GMod) as a demonstration tool for physics experiments that are otherwise impractical for class. For example, a teacher could create a rocket, giant catapult, or two objects that push against each other with more force than can be safely (or possibly) generated at school.

Teachers can also help students model experimental designs and solutions to physics and 3D geometry problems, and students who want to share their work (with the appropriate permissions) can create and post expository pieces explaining their creations on DIY sites such as Instructables. Teachers and students can also use GMod to create explorable 3D maps and models that connect to class content.

GMod is a physics sandbox stuffed with art and models from Valve Software's popular games, including Half-Life 2 and Counter-Strike. With a large library of generic objects, recognizable props from Valve's games, and prebuilt devices such as thrusters and wheels, users can build and share nearly anything they can imagine.

Every object's physical properties can be modified, letting players tweak things such as lighting or the amount of force and torque an object can create or withstand. With GMod, students can model solutions to physics problems, draw hypotheses about how things work in the real world, make films or sculptures, or just have madcap fun.

While the toolkit and physics engine are superb, GMod is nowhere near as easy to use as its spiritual cousin, Minecraft. If students don't already have experience with similar editing software, they'll need to spend a significant amount of time learning the ins and outs of the game's tools, materials, and settings. GMod also has some highly distracting assets -- weapons and scary, rag-doll character models -- which, like TNT in Minecraft, might derail more productive play.

As a teaching tool, GMod benefits from focused use and clear expectations -- including what specific objects should be used. It's definitely a "right kid, right time, right project" teaching and learning tool and unreasonable as a requirement for an entire class. But certain kids will fall in love and engineer fantastic creations.

Learning Rating

Overall Rating

Offers mind-boggling possibilities for building with models and art from Valve Software's hit games, along with an active user community -- but it's not designed to grab new users.


There's spectacular potential for learning everything from physics to digital filmmaking, but it'll take an equally spectacular teacher and/or student(s).


With realistic graphics, no tutorial, and an interface that functions more like a game-development environment than a user-friendly game menu, Garry's Mod can intimidate new users.

Common Sense reviewer

Community Rating

Great for learning, but must teach students how to use it.

I play this game on my own free time and its great. Physics play a massive part in this game if you are trying to build a vehicle. Its also great for animation, you can create rag dolls and position their eyes, arms, legs fingers and even the mouth. You can download what users of the made such as the wiremod. the wiremod use even thing you could use on a circuit board, and a computer, you gotta know how to use gates and how gyroscope works how motion sensors will activate.You can open of the command prompt and add your own code to the game. But there is violence there are guns and AI's that you can kill, there is blood, and a little swearing depending on what AI you spawn. Other then that this is a great game and I love it!

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Privacy Rating

Data Safety How safe is this product?

  • Users can interact with trusted users.
  • Personal information can be displayed publicly.
  • User-created content is not filtered for personal information before being made publicly visible.

Data Rights What rights do I have to the data?

  • Users can create or upload content.
  • Processes to access or review user data are available.
  • Processes to modify data are available for authorized users.

Ads & Tracking Are there advertisements or tracking?

  • Personal information is not shared for third-party marketing.
  • Unclear whether this product displays traditional or contextual advertisements.
  • Personalised advertising is displayed.

Continue reading about this tool's privacy practices, including data collection, sharing, and security.

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