Build settings and scene order in Unity - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of the Build Settings window in Unity?

The Build Settings window lets you choose which scenes to include in your game build and set the platform you want to build for, like PC, mobile, or web.

beginner

How does scene order in Build Settings affect your game?

The scene order decides which scene loads first when the game starts. The first scene in the list is the starting point of your game.

beginner

How do you add a scene to the Build Settings in Unity?

Open Build Settings, then drag your scene file into the Scenes In Build list or click 'Add Open Scenes' to include the currently open scene.

intermediate

Why is it important to keep scenes in the correct order in Build Settings?

Because the first scene loads when the game starts, and other scenes load by their order or by code. Wrong order can cause your game to start in the wrong place.

beginner

Can you build a Unity game without adding any scenes to Build Settings?

No, Unity needs at least one scene in Build Settings to know what to include in the game build and what to load first.

What does the first scene in the Build Settings list represent?

A The scene that loads first when the game starts

B The last scene to load

C A scene that is never loaded

D The scene used only for testing

The first scene in the Build Settings list is the starting scene that loads when the game runs.

How can you add the currently open scene to the Build Settings?

A Right-click the scene and select 'Build'

B Drag the scene from Project window to Hierarchy

C Click 'Add Open Scenes' button

D Scenes add automatically when opened

The 'Add Open Scenes' button in Build Settings adds the scene you currently have open.

What happens if you build a game without any scenes in Build Settings?

A Unity will add default scenes

B The build will fail or have no content

C The game will load all scenes automatically

D The game will start with an empty scene

Unity requires at least one scene in Build Settings to build the game properly.

Why might you reorder scenes in Build Settings?

A To change which scene starts the game

B To change the color of scenes

C To delete scenes automatically

D To rename scenes

Reordering scenes changes which scene loads first when the game starts.

Which platform setting can you change in Build Settings?

A The size of the Unity editor window

B The color scheme of the game

C The font style used in the game

D Target device like PC, Android, or iOS

Build Settings lets you choose the platform you want to build your game for.

Explain how to prepare your scenes in Unity before building your game.

Think about what Unity needs to know to build your game correctly.

Describe why the order of scenes in Build Settings matters for your game's startup.

Consider what happens when you press Play or build your game.

Practice

1. What does the Build Settings window in Unity control?

easy

A. Which scenes are included in the final game build

B. The resolution of the game window

C. The color scheme of the editor

D. The physics settings of the game

Solution

1. Step 1: Understand the purpose of Build Settings

   The Build Settings window lists scenes to include in the game build and their order.

2. Step 2: Identify what Build Settings controls

   It controls which scenes are packaged into the final game, not editor or physics settings.

3. Final Answer:

   Which scenes are included in the final game build -> Option A

4. Quick Check:

   Build Settings = Scenes included [OK]

Hint: Build Settings = scenes included in game build [OK]

Common Mistakes:

• Confusing Build Settings with editor appearance
• Thinking it controls physics or resolution
• Assuming it sets scene start order only

2. Which of the following is the correct way to add a scene to the build in Unity?

easy

A. Drag the scene file into the Build Settings window's Scenes In Build list

B. Right-click the scene in Project and select 'Add to Build'

C. Open the scene and press Ctrl+B

D. Rename the scene file to include 'build' in its name

Solution

1. Step 1: Recall how to add scenes to build

   In Unity, you add scenes by dragging them into the Scenes In Build list in Build Settings.

2. Step 2: Evaluate the options

   Only dragging the scene file into Build Settings is correct; other options are invalid or do nothing.

3. Final Answer:

   Drag the scene file into the Build Settings window's Scenes In Build list -> Option A

4. Quick Check:

   Add scene = drag to Build Settings [OK]

Hint: Add scenes by dragging into Build Settings list [OK]

Common Mistakes:

• Trying to add scenes by renaming files
• Using keyboard shortcuts that don't add scenes
• Expecting context menu to add scenes automatically

3. Given the following scenes in Build Settings in order: ["Menu", "Level1", "Level2"], what will SceneManager.LoadScene(1) load?

medium

A. The scene named "Menu"

B. The scene named "Level1"

C. The scene named "Level2"

D. An error because index 1 is invalid

Solution

1. Step 1: Understand scene indexing in Build Settings

   Scenes are indexed starting at 0 in the order listed in Build Settings.

2. Step 2: Identify scene at index 1

   Index 0 = "Menu", index 1 = "Level1", index 2 = "Level2".

3. Final Answer:

   The scene named "Level1" -> Option B

4. Quick Check:

   Index 1 = second scene = Level1 [OK]

Hint: Scene index starts at 0 in Build Settings [OK]

Common Mistakes:

• Assuming index 1 is the first scene
• Confusing scene names with indexes
• Thinking index 1 causes an error

4. You try to load a scene by index using SceneManager.LoadScene(3), but get an error. What is the most likely cause?

medium

A. SceneManager.LoadScene only accepts strings

B. You must use scene names, not indexes

C. The scene file is missing from the Project folder

D. The scene at index 3 is not added to Build Settings

Solution

1. Step 1: Understand scene indexing and Build Settings

   Scene indexes correspond to the order in Build Settings; index 3 means the fourth scene.

2. Step 2: Identify cause of error

   If index 3 is out of range, it means fewer than 4 scenes are added to Build Settings.

3. Final Answer:

   The scene at index 3 is not added to Build Settings -> Option D

4. Quick Check:

   Index out of range = scene missing in Build Settings [OK]

Hint: Check Build Settings scene count before loading by index [OK]

Common Mistakes:

• Thinking indexes are unrelated to Build Settings
• Believing LoadScene only accepts names
• Assuming missing file causes this specific error

5. You want your game to start with the "Intro" scene, but currently the "MainMenu" scene is first in Build Settings. How can you fix this without renaming scenes?

hard

A. Call SceneManager.LoadScene("Intro") in the first scene's script

B. Change the scene file name to "00_Intro"

C. Drag the "Intro" scene to the top of the Scenes In Build list

D. Remove "MainMenu" from Build Settings

Solution

1. Step 1: Understand scene start order in Build Settings

   The first scene in the Scenes In Build list is the one that starts when the game runs.

2. Step 2: Adjust scene order without renaming

   Drag the "Intro" scene to the top of the list to make it the first scene loaded.

3. Final Answer:

   Drag the "Intro" scene to the top of the Scenes In Build list -> Option C

4. Quick Check:

   First scene in Build Settings = start scene [OK]

Hint: First scene in Build Settings list starts game [OK]

Common Mistakes:

• Renaming files instead of reordering scenes
• Removing scenes unnecessarily
• Relying only on script calls without build order