What you need to start making a game in Unity

Unity is a game engine — software that handles the graphics, physics, sound, and logic of a game so you don't have to build those systems from scratch. To start, you download Unity Hub (free) from unity.com, create an account, and use it to install a Unity editor version. The editor is where you build your game: you arrange objects on a screen, write code that makes them move and interact, and test everything before publishing.

You'll also need a code editor. Unity comes with Visual Studio Community (free) built in, or you can use Visual Studio Code (free) if you prefer. Most beginner games use C#, which is the programming language Unity uses. You don't need to be an expert in C# before you start — you learn as you build.

Your computer needs at least 4 GB of RAM and a few gigabytes of free disk space. Unity runs on Windows, Mac, and Linux. If you want to test your game on a phone, you'll need either an Android device or an iPhone, but that's optional for learning.

Key Takeaways

  • Download Unity Hub and the Unity editor for free, then create a new project and choose a 2D or 3D template depending on what kind of game you want to make.
  • The Scene view is where you place objects; the Inspector panel on the right lets you change their properties; and the Play button tests your game without leaving the editor.
  • Every object in your game is a GameObject, and you attach Components to it — a Sprite Renderer shows an image, a Collider detects when objects touch, a Rigidbody makes it fall and bounce.
  • Scripts are C# files that control how objects behave; you write code in Visual Studio, attach the script to a GameObject, and the code runs when the game plays.
  • Start with a simple game like Pong or a platformer, not a complex 3D world, because finishing a small game teaches you more than abandoning a big one.

Creating a new project and choosing a template

Open Unity Hub and click "New Project". You'll see a list of templates. For your first game, choose either "2D" or "3D" depending on what you want to build. A 2D game (like Flappy Bird or Pac-Man) is simpler to start with because you only worry about left, right, up, and down. A 3D game (like a first-person shooter) requires thinking about depth and camera angles, which adds complexity.

Name your project something simple like "My First Game" and choose where to save it on your computer. Click "Create Project". Unity will open the editor, which looks like a workspace split into panels. This takes a minute or two the first time.

Once it loads, you're looking at an empty Scene — a blank canvas where you'll build your game. The large area in the middle is the Scene view, where you see and arrange objects. On the right is the Inspector, which shows properties of whatever you've selected. At the bottom is the Project panel, which holds all your files.

Understanding GameObjects and Components

Everything in a Unity game is a GameObject — a player character, an enemy, a wall, a coin, a button. A GameObject by itself is invisible and does nothing. You make it useful by attaching Components to it. Think of a GameObject as a container and Components as the things inside that container that give it behavior.

For example, to make a visible square on screen, you create a GameObject, then attach a Sprite Renderer component (which displays an image) and a Transform component (which controls its position and size). To make that square fall due to gravity, you attach a Rigidbody component. To make it stop when it hits the ground, you attach a Collider component.

You can see all the Components attached to a GameObject in the Inspector panel. Each Component has settings you can change — a Sprite Renderer has a color and an image, a Rigidbody has a mass and gravity scale. You don't write code to change these; you just click and type in the Inspector.

Building a simple scene with objects and physics

Right-click in the Hierarchy panel (on the left side) and select "2D Object" → "Sprite" → "Square". A white square appears in the middle of your Scene. This is your first GameObject. In the Inspector on the right, you can change its color by clicking the Color field and picking a new one.

Now add a Rigidbody component so it falls. With the square still selected, click "Add Component" in the Inspector, search for "Rigidbody 2D", and click it. The square now has weight. Press the Play button at the top of the editor — the square falls off the bottom of the screen. Press Play again to stop.

Create a ground so the square lands on something. Right-click in the Hierarchy and add another 2D Square. Scale it to be long and flat — in the Inspector, change the Scale X to 5 and Scale Y to 0.5. Move it down below the falling square by changing its Y position to -3. Add a Collider component to the ground (right-click → "Add Component" → "Box Collider 2D"). Now when you press Play, the square falls and stops when it hits the ground.

Writing scripts to control game behavior

Scripts are C# files that tell GameObjects what to do. To make the square move when you press a key, you write a script. Right-click in the Project panel (bottom left) and select "Create" → "C# Script". Name it "PlayerMovement". Double-click it to open it in Visual Studio.

You'll see a template with two functions: Start (runs once when the game starts) and Update (runs every frame, about 60 times per second). Delete the empty code inside them and type this:

void Update() { float moveX = Input.GetAxis("Horizontal"); GetComponent<Rigidbody2D>().velocity = new Vector2(moveX * 5, GetComponent<Rigidbody2D>().velocity.y); }

Save the file (Ctrl+S or Cmd+S). Go back to Unity, select your square in the Hierarchy, and drag the PlayerMovement script onto it in the Inspector. Now when you press Play and use the left and right arrow keys, the square moves left and right while still falling. The script reads your keyboard input and changes the square's velocity (speed and direction).

Testing your game and fixing problems

The Play button at the top of the editor lets you test your game without leaving Unity. While playing, you can see what works and what doesn't. Press Play again to stop and return to editing mode. Any changes you make while playing are thrown away when you stop, so you have to stop, edit, and play again to test changes.

If something goes wrong, check the Console panel (usually at the bottom). If your script has an error, the Console shows a red message saying what went wrong and which line of code caused it. Common mistakes include misspelling a function name, forgetting a semicolon, or trying to use a Component that isn't attached to the GameObject.

Use the Scene view to watch what's happening. You can pause the game (the pause button next to Play) and step through one frame at a time to see exactly when something breaks. If an object is moving too fast or too slow, change the number in your script and test again.

Publishing your game so others can play it

Once your game works, you can build it so other people can play it. Go to "File" → "Build Settings". Choose your target platform: "PC, Mac & Linux Standalone" for a desktop game, "WebGL" to play it in a web browser, or "Android" or "iOS" for phones (though those require extra setup).

Click "Build", choose a folder to save it in, and Unity creates a playable file. For desktop, you get an .exe file (Windows) or .app file (Mac) that anyone can download and run. For WebGL, you get files you can upload to a website. The build process takes a few minutes.

Before you build, test thoroughly. Play through your game multiple times, try to break it, and fix any bugs. A polished small game is better than a broken big one.

Where to learn more and what to build next

Unity's official tutorials on learn.unity.com cover everything from basic scenes to advanced topics. The Unity Manual (docs.unity3d.com) explains every feature in detail. YouTube channels like Brackeys and Sebastian Lague have step-by-step videos for beginners.

Start with a small, complete game: Pong (two paddles and a ball), a platformer (a character that runs and jumps), or a simple shooter (move and shoot at enemies). Finishing a small game teaches you more than starting a big one and quitting halfway. Once you've shipped one game, the second one is much faster because you already know the workflow.

Join communities like r/Unity3D on Reddit or the Unity Discord server. Other developers ask and answer questions constantly, and you'll find solutions to problems you run into.

Frequently Asked Questions

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

No. You can learn C# as you build your first game. Start with simple scripts that move objects or detect collisions, and gradually add more complex logic. Many beginners learn coding faster by building something real than by studying syntax in isolation.

Can I make a game without writing any code?

Yes, using visual scripting tools like Bolt or PlayMaker, which let you connect blocks instead of typing code. However, most games eventually need custom code, and learning C# is worth the effort. Start with code from the beginning — it's not as hard as it sounds.

What's the difference between 2D and 3D games in Unity?

2D games use flat sprites (images) and work on a single plane. 3D games use models with depth and require a camera that moves through space. 2D is simpler for beginners because you have fewer directions to think about and fewer things to go wrong.

How long does it take to make a game?

A simple game (Pong, Snake, a basic platformer) takes a few weeks if you work a few hours a day. A medium game (a complete mobile game with multiple levels) takes a few months. A large game (a full 3D world) takes years. Start small so you actually finish something.

Can I sell a game I make in Unity?

Yes. Unity is free to use, and you keep all the money your game makes. If your game makes over $1 million in revenue in a year, you pay a small percentage to Unity, but that's a good problem to have. Read Unity's terms of service for the exact details.