What you need to do first

Creating a game in Unity starts with downloading the engine, creating a project, and understanding the three core pieces: the Scene (where your game happens), GameObjects (the things in your game), and Scripts (code that makes things move and respond). You do not need to know how to code before you start — Unity's visual editor lets you build and test without writing a single line, though scripts unlock what your game can actually do.

The fastest path is to download Unity Hub (the free launcher that manages your Unity versions), create a new 3D or 2D project depending on what you want to build, and spend your first session just placing objects in the Scene and moving them around. This teaches you how the editor works before you touch code.

Key Takeaways

  • Download Unity Hub, create a new project, and choose 2D or 3D based on the type of game you want to make.
  • The Scene is where your game lives; GameObjects are the things in it; Scripts are code that makes them behave.
  • You can build and test your game without writing code by using the visual editor and built-in components.
  • Scripts written in C# tell GameObjects what to do — they are attached to objects and run when the game plays.
  • Testing happens in Play mode, where you can see your game run in real time and catch problems before building.

Download Unity and set up your first project

Go to unity.com and download Unity Hub. This is the launcher that installs and manages different versions of Unity on your computer. Open Hub, sign in with a free Unity account, and click New Project. Choose either 2D (for games like platformers, top-down shooters, or puzzle games) or 3D (for games with depth, like first-person games or 3D adventures). Name your project something you will recognize, pick a folder to save it in, and click Create Project.

Unity will open to the Editor. You are now looking at the Scene view (the main workspace where you build), the Hierarchy (a list of everything in your Scene on the left), the Inspector (properties of whatever you have selected, on the right), and the Project folder (your game files, at the bottom). This layout is the same for every project you make.

Place your first GameObjects and understand the Scene

In the Hierarchy on the left, right-click and select 3D Object (or 2D Object if you made a 2D project), then choose Cube. A cube appears in the middle of your Scene. This cube is a GameObject — the basic building block of everything in Unity. Click on it in the Scene and drag it around with your mouse. In the Inspector on the right, you can see its Transform (position, rotation, scale) and other properties.

Add more GameObjects the same way: right-click in the Hierarchy, pick a shape, and place it in your Scene. Add a Plane (a flat surface) and position your cube on top of it. Add a Light so you can see what you are building. This teaches you the core workflow: create objects, position them, and adjust their properties in the Inspector. Everything you build in Unity follows this pattern.

Attach scripts to make GameObjects do things

Scripts are C# code files that tell GameObjects how to behave. Right-click in your Project folder (bottom of the screen), select Create, then C# Script. Name it PlayerMovement and double-click it to open it in your code editor (usually Visual Studio Code or the built-in editor). You will see a template with two functions: Start() (runs once when the game starts) and Update() (runs every frame while the game plays).

Delete the template code and type this simple script:

void Update() { transform.Rotate(0, 1, 0); }

Save the file. Go back to Unity, select your cube in the Hierarchy, and drag the PlayerMovement script onto the Inspector. The script is now attached to the cube. Press the Play button at the top of the editor. Your cube will spin. Press Play again to stop. You have just written your first game behavior — the cube rotates because the script tells it to rotate 1 degree on the Y axis every frame.

Respond to keyboard input and move your player

Most games need the player to control something. Replace your rotation script with this:

void Update() { float moveX = Input.GetAxis("Horizontal"); float moveY = Input.GetAxis("Vertical"); transform.Translate(moveX * 0.1f, 0, moveY * 0.1f); }

Save and go back to Unity. Press Play. Use the arrow keys or WASD to move your cube around the Scene. The script reads keyboard input (GetAxis checks for arrow keys or WASD), then moves the object (Translate shifts it in space). This is how player movement works in almost every game — read input, change position, repeat every frame.

You can adjust how fast the cube moves by changing the 0.1f number to something larger (faster) or smaller (slower). This is how you tune game feel — small number changes make a big difference in how the game plays.

Test your game in Play mode and build it

Press Play whenever you want to test. The editor turns blue and your game runs. You can move your cube, see how it feels, and spot problems. Press Play again to stop and go back to editing. This cycle — build, test, adjust, test again — is how game development works. Most of your time is spent in this loop, not writing code from scratch.

When you are ready to share your game or run it outside the editor, go to File > Build Settings. Click Add Open Scenes to include your Scene in the build. Choose your target platform (Windows, Mac, or Web), click Build, pick a folder, and Unity creates a standalone game file. You can now send that file to someone else and they can play it without owning Unity.

Add more features by combining scripts and components

Every GameObject has a Transform (position, rotation, scale) and can have other components attached — Colliders (for physics and collision), Rigidbodies (for gravity and forces), Renderers (for how it looks), and your own Scripts. You build complex behavior by combining these pieces. A player character might have a Rigidbody (so gravity pulls it down), a Collider (so it does not fall through the ground), and a Script (so keyboard input moves it).

The best way to learn what is possible is to build small things: a cube that jumps when you press space, a ball that rolls downhill, a camera that follows your player. Each small project teaches you one new piece. After a few of these, you will recognize patterns and be able to build bigger games by combining what you already know.

Frequently Asked Questions

Do I need to know how to code before I start Unity?

No. You can build and test games using only the visual editor and built-in components. Scripts unlock more control, but you can learn C# as you go — start with simple scripts like the rotation example, test them, and gradually add more complex behavior.

What is the difference between 2D and 3D projects?

2D projects are for games viewed from above or the side (platformers, puzzle games, top-down shooters). 3D projects are for games with depth and perspective (first-person games, 3D adventures). Choose based on the type of game you want to make. You can switch later, but starting with the right choice saves setup work.

How do I add graphics and sound to my game?

Import image and audio files into your Project folder, then drag them onto GameObjects or attach them through the Inspector. A Sprite Renderer component displays 2D images; a Mesh Renderer displays 3D models. An Audio Source component plays sound. Unity supports common formats like PNG, MP3, and WAV.

How long does it take to make a game in Unity?

A simple game (a cube you can move around) takes an hour. A small complete game (a platformer or puzzle game with a few levels) takes weeks to months depending on how much art and sound you create. Most of the time goes to making content (art, levels, sound), not learning the engine.

Can I publish my game and sell it?

Yes. Once your game is built, you can publish it to Steam, itch.io, the App Store, Google Play, or your own website. Unity is free for games that make less than a certain amount of revenue per year, so you can start without paying anything.