Build settings configuration in Unity - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this Unity build settings code?

Consider this C# script snippet that prints the active build target in Unity. What will it print when run in the Unity Editor?

Unity

using UnityEditor;
using UnityEngine;

public class BuildTargetCheck : MonoBehaviour
{
    void Start()
    {
        Debug.Log(EditorUserBuildSettings.activeBuildTarget);
    }
}

A StandaloneWindows64

B Android

C iOS

D WebGL

💡 Hint

Check the default build target in Unity Editor's Build Settings window.

The default active build target in Unity Editor on Windows is usually StandaloneWindows64 unless changed.

🧠 Conceptual

intermediate

Which build setting controls the scripting backend in Unity?

In Unity's build settings, which option controls whether you use Mono, IL2CPP, or other scripting backends?

A Player Settings > Other Settings > Scripting Backend

B Build Settings > Scenes In Build

C Player Settings > Resolution and Presentation

D Build Settings > Platform

💡 Hint

Look inside Player Settings under Other Settings.

The scripting backend is set in Player Settings under Other Settings, not directly in Build Settings.

❓ Predict Output

advanced

What happens when you call BuildPipeline.BuildPlayer with an empty scenes array?

Given this code snippet, what will be the result?

Unity

using UnityEditor;

public class BuildTest
{
    public static void BuildEmptyScenes()
    {
        BuildPlayerOptions options = new BuildPlayerOptions();
        options.scenes = new string[] {};
        options.locationPathName = "Builds/MyGame.exe";
        options.target = BuildTarget.StandaloneWindows64;
        options.options = BuildOptions.None;

        var report = BuildPipeline.BuildPlayer(options);
        UnityEngine.Debug.Log(report.summary.result);
    }
}

A BuildResult.Succeeded

B BuildResult.Failed

C BuildResult.Cancelled

D Throws an exception

💡 Hint

Think about what happens if no scenes are included in the build.

Building with no scenes results in a failed build because Unity requires at least one scene.

🔧 Debug

advanced

Why does this build script fail to switch platform before building?

Examine this script that tries to switch build platform and then build. Why does it fail to build for Android?

Unity

using UnityEditor;

public class BuildScript
{
    public static void BuildAndroid()
    {
        EditorUserBuildSettings.SwitchActiveBuildTarget(BuildTargetGroup.Android, BuildTarget.Android);
        BuildPlayerOptions options = new BuildPlayerOptions();
        options.scenes = new string[] {"Assets/Scene1.unity"};
        options.locationPathName = "Builds/Android.apk";
        options.target = BuildTarget.Android;
        options.options = BuildOptions.None;

        BuildPipeline.BuildPlayer(options);
    }
}

A Scenes array must include all scenes in the project

B BuildTargetGroup.Android is invalid and causes failure

C SwitchActiveBuildTarget is asynchronous and build starts before switch completes

D BuildPlayerOptions.locationPathName is incorrect for Android builds

💡 Hint

Consider how platform switching works internally in Unity Editor.

SwitchActiveBuildTarget is asynchronous and may not complete before BuildPlayer runs, causing build failure.

🚀 Application

expert

How to programmatically add a scene to Build Settings in Unity?

You want to add a scene to the build settings list using a script. Which code snippet correctly adds "Assets/Scenes/Level1.unity" to the build scenes?

A BuildPipeline.AddSceneToBuild("Assets/Scenes/Level1.unity");

B EditorBuildSettings.scenes.Append(new EditorBuildSettingsScene("Assets/Scenes/Level1.unity", true));

C EditorBuildSettings.AddScene("Assets/Scenes/Level1.unity");

D var scenes = EditorBuildSettings.scenes.ToList(); scenes.Add(new EditorBuildSettingsScene("Assets/Scenes/Level1.unity", true)); EditorBuildSettings.scenes = scenes.ToArray();

💡 Hint

Think about how to modify arrays in C# and assign back to EditorBuildSettings.scenes.

EditorBuildSettings.scenes is an array. You must convert to a list, add the scene, then assign back the array.