How to Pack a Unity Application into a Single Executable

This guide shows how to use BoxedApp Packer to turn a Unity game into one portable EXE. The packed app includes required runtime files and content folders and runs without installation. BoxedApp Packer does not extract embedded files to disk.

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Step 1. Create and build a sample project

In Unity Hub, install a sample like 2D Game Kit and open it in the editor. Use File - Build Settings and build for Windows. Unity will produce an EXE plus a set of files and folders.

Unity Hub 2D Game Kit — Unity Hub with 2D Game Kit

Unity Editor Build Settings — Build Settings in the Unity editor

Step 2. Inspect the build output

A typical Windows build contains the game EXE, UnityPlayer.dll, UnityCrashHandler32.exe or 64-bit variant, and a Data folder plus Mono.

Unity build output folder — Build output produced by Unity

Step 3. Add files in BoxedApp Packer

Start BoxedApp Packer. Select the built EXE as the input. In Files, choose Application Directory and add:

UnityPlayer.dll
UnityCrashHandler32.exe or UnityCrashHandler64.exe
New Unity Project_Data directory
Mono directory

Adding Unity folders in BoxedApp Packer — Adding Data and Mono to Application Directory

Step 4. Build and run the packed EXE

Click Build to generate a single executable. The packed Unity game runs from any folder, network share, or removable drive and does not write embedded files to disk.

Notes

Match 32-bit or 64-bit output in Unity to the target you plan to ship.
If you use IL2CPP, include all produced runtime files the app needs.
To reduce size, strip editor-only assets and unneeded locales before packing.

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