Unity to 64-bit

 Here's a step-by-step guide to help you build and export your Unity game to run on a 64-bit Linux OS, such as a modern version of MuOS (64-bit) or your own custom Linux-based console.

This may not work but this is based off of research I've been doing to see about exporting a game from Unity to run on a 64-bit Linux computer.

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🎮 Step-by-Step: Exporting a Unity Game for 64-bit Linux

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🧱 Step 1: Prepare Your Project

1. Open your Unity project.

2. Use a Unity version 2020.3 LTS or newer (for better Linux support + long-term stability).

3. Avoid URP/HDRP if you want maximum compatibility with low-power devices.

   • Stick with the Built-In Render Pipeline for now.

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🛠️ Step 2: Install Linux Build Support

1. Open Unity Hub

2. Select your Unity version → Click “Add Modules”

3. Check “Linux Build Support (Mono)” or “Linux Build Support (IL2CPP)”

   • IL2CPP is faster, Mono is easier to run

4. Click Done to install the module

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🖥️ Step 3: Set Up Linux Build Settings

1. In Unity, go to File > Build Settings

2. Click “Add Open Scenes” to include your current scene

3. Select Linux as the platform

4. Click Switch Platform

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⚙️ Step 4: Configure Player Settings

1. In the Build Settings window, click Player Settings

2. Under Other Settings:

   • Architecture: Set to x86_64 (or ARM64 if targeting ARM)

   • Scripting Backend:

     • Use Mono for simplicity

     • Use IL2CPP if you're optimizing for performance (requires C++ toolchain)

   • Api Compatibility Level: Set to .NET Standard 2.1

3. Under Resolution and Presentation:

   • Uncheck “Resizable Window” if you're using a handheld device

   • Set a default resolution (e.g., 640x480, 1280x720, etc.)

4. Set Company Name and Product Name under Product Settings

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📦 Step 5: Build the Game

1. Back in the Build Settings window, click:

   • Build → choose an output folder (e.g., LinuxBuild)

2. Unity will create a folder with:

   • YourGameName.x86_64 (the executable)

   • YourGameName_Data (the data folder)

   • UnityPlayer.so, if needed (shared libraries)

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📁 Step 6: Prepare the Game to Run on Linux

You now have a full build ready to run on 64-bit Linux!

✅ To run it:

1. Make the executable file launchable:

   bash chmod +x YourGameName.x86_64

2. Run it via terminal or a desktop launcher:

   bash ./YourGameName.x86_64

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💡 Optional: Create a .desktop file

This makes it easier to launch the game from a menu:

ini
[Desktop Entry]
Name=Your Game Title
Exec=/path/to/YourGameName.x86_64
Path=/path/to/game/folder
Icon=/path/to/icon.png
Type=Application
Terminal=false

Save that as YourGame.desktop, make it executable with chmod +x, and place it in your MuOS applications folder.

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🧪 Step 7: Test on the Target Device

1. Copy the build folder to your device (USB, SD card, SCP, etc.)

2. Open terminal on the device and run the game

3. If it doesn’t run:

   • Check dependencies: try installing libc6, libx11, libgl1, or others

   • Run ldd YourGameName.x86_64 to see what libraries might be missing

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🔧 Bonus: Optimization for Low-Power Devices

If you're deploying to a MuOS handheld or Pi-based device:

• Use low-res textures

• Limit shaders and lighting

• Disable post-processing

• Avoid physics-heavy scenes

• Test frame rate using Application.targetFrameRate = 30; in code

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🧩 Summary

Step	Action
1	Use Built-In RP, Unity 2020+
2	Install Linux Build Support
3	Switch Platform to Linux
4	Set Arch to x86_64, Backend to Mono
5	Build the game
6	Make it executable (chmod +x)
7	Copy and run on Linux or MuOS device
8	Fix missing libraries as needed