diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..9a4b7d8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,79 @@
+name: Continuous Integration
+on: [push, pull_request]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read # to fetch code (actions/checkout)
+
+jobs:
+  build-only-desktop:
+    name: Build only (Desktop)
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    env:
+      CI_DONT_TARGET_ANDROID: 1
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install .NET 8.0.x
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "8.0.x"
+
+      - name: Build
+        run: dotnet build -c Debug SDL3-CS.Desktop.slnf
+
+  build-only-android:
+    name: Build only (Android)
+    runs-on: windows-latest
+    timeout-minutes: 60
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup JDK 11
+        uses: actions/setup-java@v4
+        with:
+          distribution: microsoft
+          java-version: 11
+
+      - name: Install .NET 8.0.x
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "8.0.x"
+
+      - name: Install .NET workloads
+        run: dotnet workload install android
+
+      - name: Build
+        run: dotnet build -c Debug SDL3-CS.Android.slnf
+
+  build-only-ios:
+    name: Build only (iOS)
+    runs-on: macos-15
+    timeout-minutes: 60
+    env:
+      CI_DONT_TARGET_ANDROID: 1
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install .NET 8.0.x
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "8.0.x"
+
+      - name: Install .NET Workloads
+        run: dotnet workload install ios
+
+      # https://github.com/dotnet/macios/issues/19157
+      # https://github.com/actions/runner-images/issues/12758
+      - name: Use Xcode 16.4
+        run: sudo xcode-select -switch /Applications/Xcode_16.4.app
+
+      - name: Build
+        run: dotnet build -c Debug SDL3-CS.iOS.slnf
diff --git a/SDL3-CS.Tests/SDL3-CS.Tests.csproj b/SDL3-CS.Tests/SDL3-CS.Tests.csproj
index f2157b3..fa3114e 100644
--- a/SDL3-CS.Tests/SDL3-CS.Tests.csproj
+++ b/SDL3-CS.Tests/SDL3-CS.Tests.csproj
@@ -28,7 +28,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <None Include="..\External\SDL_image\test\sample.png">
+    <None Include="..\External\SDL_image\test\sample.png" Condition="Exists('..\External\SDL_image\test\sample.png')">
       <Link>sample.png</Link>
       <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
     </None>
diff --git a/SDL3-CS/SDL3-CS.csproj b/SDL3-CS/SDL3-CS.csproj
index 170dabf..7d46bf5 100644
--- a/SDL3-CS/SDL3-CS.csproj
+++ b/SDL3-CS/SDL3-CS.csproj
@@ -2,7 +2,8 @@
 
   <PropertyGroup>
     <RootNamespace>SDL</RootNamespace>
-    <TargetFrameworks>net8.0;net8.0-android</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(CI_DONT_TARGET_ANDROID)' != '1' ">net8.0;net8.0-android</TargetFrameworks>
+    <TargetFramework Condition=" '$(CI_DONT_TARGET_ANDROID)' == '1' ">net8.0</TargetFramework>
     <SupportedOSPlatformVersion>21</SupportedOSPlatformVersion>
     <Nullable>enable</Nullable>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
diff --git a/SDL3_image-CS/SDL3_image-CS.csproj b/SDL3_image-CS/SDL3_image-CS.csproj
index 3bbbe3c..b868fd5 100644
--- a/SDL3_image-CS/SDL3_image-CS.csproj
+++ b/SDL3_image-CS/SDL3_image-CS.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net8.0-android</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(CI_DONT_TARGET_ANDROID)' != '1' ">net8.0;net8.0-android</TargetFrameworks>
+    <TargetFramework Condition=" '$(CI_DONT_TARGET_ANDROID)' == '1' ">net8.0</TargetFramework>
     <SupportedOSPlatformVersion>21</SupportedOSPlatformVersion>
     <RootNamespace>SDL</RootNamespace>
     <Nullable>enable</Nullable>
diff --git a/SDL3_mixer-CS/SDL3_mixer-CS.csproj b/SDL3_mixer-CS/SDL3_mixer-CS.csproj
index 881e7da..ac24899 100644
--- a/SDL3_mixer-CS/SDL3_mixer-CS.csproj
+++ b/SDL3_mixer-CS/SDL3_mixer-CS.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net8.0-android</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(CI_DONT_TARGET_ANDROID)' != '1' ">net8.0;net8.0-android</TargetFrameworks>
+    <TargetFramework Condition=" '$(CI_DONT_TARGET_ANDROID)' == '1' ">net8.0</TargetFramework>
     <SupportedOSPlatformVersion>21</SupportedOSPlatformVersion>
     <RootNamespace>SDL</RootNamespace>
     <Nullable>enable</Nullable>
diff --git a/SDL3_ttf-CS/SDL3_ttf-CS.csproj b/SDL3_ttf-CS/SDL3_ttf-CS.csproj
index 62d36dc..89c8680 100644
--- a/SDL3_ttf-CS/SDL3_ttf-CS.csproj
+++ b/SDL3_ttf-CS/SDL3_ttf-CS.csproj
@@ -1,7 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFrameworks>net8.0;net8.0-android</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(CI_DONT_TARGET_ANDROID)' != '1' ">net8.0;net8.0-android</TargetFrameworks>
+    <TargetFramework Condition=" '$(CI_DONT_TARGET_ANDROID)' == '1' ">net8.0</TargetFramework>
     <SupportedOSPlatformVersion>21</SupportedOSPlatformVersion>
     <RootNamespace>SDL</RootNamespace>
     <Nullable>enable</Nullable>