Package games for distribution
How to package your game for distribution.
Desktop games
To publish desktop games, it is recommended that you build your project as a self-contained .NET application. As such, your game will require absolutely no external dependencies and should run out-of-the-box as-is.
Building and packaging
From the .NET CLI:
dotnet publish -c Release -r win-x64 -p:PublishReadyToRun=false -p:TieredCompilation=false -p:PublishAot=true --self-contained
Important
We are making use of the PublishAot option. Using Aot has some restrictions which may require changes to your game code. Especially if you are using Reflection.
You can then zip the content of the publish folder and distribute the archive as-is.
If you are targeting WindowsDX, note that players will need the DirectX June 2010 runtime to be installed on their machine for audio and gamepads to work properly.
We recommend that you distribute your game as an application bundle. Application bundles are directories with the following file structure:
YourGame.app (this is your root folder)
- Contents
- Resources
- Content (this is where all your content and XNB's should go)
- YourGame.icns (this is your app icon, in ICNS format)
- MacOS
- YourGame (the main executable for your game)
- Info.plist (the metadata of your app, see below for contents)
So first lets create our directory structure.
mkdir -p bin/Release/YourGame.app/Contents/MacOS/
mkdir -p bin/Release/YourGame.app/Contents/Resources/Content
Next we need to publish our application for both arm64 (Apple Silicon) and x64 (Intel). From the .NET CLI:
dotnet publish -c Release -r osx-x64 -p:PublishReadyToRun=false -p:TieredCompilation=false -p:PublishAot=true --self-contained
dotnet publish -c Release -r osx-arm64 -p:PublishReadyToRun=false -p:TieredCompilation=false -p:PublishAot=true --self-contained
Important
We are making use of the PublishAot option. Using Aot has some restrictions which may require changes to your game code. Especially if you are using Reflection.
Next we need to combine the two binaries into one Universal Binary which will work on both arm64 and x64 machines.
We can do this using the xcode utility lipo.
lipo -create bin/Release/net8.0/osx-arm64/publish/YourGame bin/Release/net8.0/osx-x64/publish/YourGame -output bin/Release/YourGame.app/Contents/MacOS/YourGame
The above command will combine the two output executables into one. It assumes you are using the standard Output path for your application.
If you are using a custom Output folder, you will need to make adjustments to the above command.
Copy over your content
cp -R bin/Release/net8.0/Content bin/Release/YourGame.app/Contents/Resources/Content
The Info.plist file is a standard macOS file containing metadata about your game. Here is an example file with required and recommended values set:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleExecutable</key>
<string>YourGame</string>
<key>CFBundleIconFile</key>
<string>YourGame</string>
<key>CFBundleIdentifier</key>
<string>com.your-domain.YourGame</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>YourGame</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleSignature</key>
<string>FONV</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>LSApplicationCategoryType</key>
<string>public.app-category.games</string>
<key>LSMinimumSystemVersion</key>
<string>10.15</string>
<key>NSHumanReadableCopyright</key>
<string>Copyright © 2022</string>
<key>NSPrincipalClass</key>
<string>NSApplication</string>
<key>LSRequiresNativeExecution</key>
<true/>
<key>LSArchitecturePriority</key>
<array>
<string>arm64</string>
</array>
</dict>
</plist>
Note
For more information about Info.plist files, see the Apple documentation.
After completing these steps, your .app folder should appear as an executable application on macOS.
However it does need an icon. So we need to create an .icns file. We can use online tools to do this or you can use the following:
mkdir -p bin/Release/YourGame.iconset
sips -z 16 16 Icon.png --out bin/Release/YourGame.iconset/icon_16x16.png
sips -z 32 32 Icon.png --out bin/Release/YourGame.iconset/icon_16x16@2x.png
sips -z 32 32 Icon.png --out bin/Release/YourGame.iconset/icon_32x32.png
sips -z 64 64 Icon.png --out bin/Release/YourGame.iconset/icon_32x32@2x.png
sips -z 128 128 Icon.png --out bin/Release/YourGame.iconset/icon_128x128.png
sips -z 256 256 Icon.png --out bin/Release/YourGame.iconset/icon_128x128@2x.png
sips -z 256 256 Icon.png --out bin/Release/YourGame.iconset/icon_256x256.png
sips -z 512 512 Icon.png --out bin/Release/YourGame.iconset/icon_256x256@2x.png
sips -z 512 512 Icon.png --out bin/Release/YourGame.iconset/icon_512x512.png
sips -z 1024 1024 Icon.png bin/Release/YourGame.iconset/icon_512x512@2x.png
iconutil -c icns bin/Release/YourGame.iconset --output bin/Release/YourGame.app/Contents/Resources/YourGame.icns
Note
This code is expecting an Icon.png file to be in the same directory. This file should be 1024 x 1024 pixels.
For archiving, we recommend using the .tar.gz format to preserve the execution permissions (you will likely run into permission issues if you use .zip at any point).
From the .NET CLI:
dotnet publish -c Release -r linux-x64 -p:PublishReadyToRun=false -p:TieredCompilation=false -p:PublishAot=true --self-contained
Important
We are making use of the PublishAot option. Using Aot has some restrictions which may require changes to your game code. Especially if you are using Reflection.
You can then archive the content of the publish folder and distribute the archive as-is.
We recommend using the .tar.gz archiving format to preserve the execution permissions.
Special notes about .NET parameters
.NET proposes several parameters when publishing apps that may sound helpful, but have many issues when it comes to games (because they were never meant for games in the first place, but for small lightweight applications).
PublishAot
This option optimises your game code "Ahead of Time". It allows you to ship your game without the need to JIT (Just In Time compile).
However, you do need to currently add some additional settings to your .csproj.
<ItemGroup>
<TrimmerRootAssembly Include="MonoGame.Framework" />
<TrimmerRootAssembly Include="mscorlib" />
</ItemGroup>
The TrimmerRootAssembly stops the trimmer removing code from these assemblies. This should allow the game to run without
any issues. However if you are using any Third Party or additional assemblies, you might need to add them to this list or fix your code to be Aot compliant.
It is recommended that you publish using AOT as it simplifies the app bundle.
See Trim self-contained deployments and executables for more information.
There are some known areas you need to watchout for:
- Using
XmlSerializer in your game will probably cause issues. Since it uses reflection it will be difficult for the Trimmer to figure out what needs to be kept.
It is recommended that, instead of using the Deserialize method, you write your own custom deserializer using XDocument or XmlReader.
Alternatively you can use the Content Pipeline and create a custom Processor and Reader to convert the Xml into a binary format that can be loaded via the usual Content.Load<T> method.
- Dynamically loading assemblies via
Assembly.LoadFile.
- No run-time code generation, for example, System.Reflection.Emit.
ReadyToRun (R2R)
ReadyToRun is advertised as improving application startup time, but slightly increasing binary size. We recommend not using it for games because it produces micro stutters when your game is running.
ReadyToRun code is of low quality and makes the Just-In-Time compiler (JIT) trigger regularly to promote the code to a higher quality. Whenever the JIT runs, it produces potentially very visible stutters.
Disabling ReadyToRun solves this issue (at the cost of a slightly longer startup time, but typically very negligible).
ReadyToRun is disabled by default. You can configure it by setting the PublishReadyToRun property in your .csproj file.
MonoGame templates for .NET projects explicitly set this to false.
Tiered compilation
Tiered compilation is a companion system to ReadyToRun and works on the same principle to enhance startup time. We suggest disabling it to avoid any stutter while your game is running.
Tiered compilation is enabled by default. To disable it, set the TieredCompilation property to false in your .csproj.
MonoGame templates for .NET projects explicitly set this to false.
SingleFilePublish
SingleFilePublish packages your game into a single executable file with all dependencies and content integrated.
While it sounds very convenient, be aware that it's not magical and is in fact a hidden self-extracting zip archive. As such, it may make app startup take a lot longer if your game is large, and may fail to launch on systems where user permissions don't allow extracting files (or if there is not enough storage space available).
We highly recommend not using it for better compatibility across systems.
Mobile games
Please refer to the Xamarin documentation: