diff --git a/.github/workflows/build_test.yml b/.github/workflows/build_test.yml
new file mode 100644
index 0000000000..5dd9d2709c
--- /dev/null
+++ b/.github/workflows/build_test.yml
@@ -0,0 +1,152 @@
+# Documentation: https://wiki.unvanquished.net/wiki/Continuous_integration
+
+name: Build and test
+
+on:
+  push:
+    branches:
+      - master
+      - 'for-*.*.*/sync' # Next-release branch
+  pull_request:
+    branches:
+      - '**'
+    paths:
+      - .github/workflows/build_test.yml
+      # The rest of this list should stay in sync with .appveyor.yml
+      - 'src/**'
+      - 'libs/**'
+      - 'cmake/**'
+      - CMakeLists.txt
+      - '**.cmake'
+      - .gitmodules
+
+jobs:
+  mac:
+    name: Mac
+    runs-on: macos-15-intel
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Check out submodules
+        shell: bash
+        env:
+          # For example: "master" (on pull requests only)
+          PR_TARGET_BRANCH: ${{ github.base_ref }}
+          # Target branch name, on pull requests only. Even if the branch comes from an external
+          # repo it is just the bare branch name, for example "new-feature".
+          PR_SOURCE_BRANCH: ${{ github.head_ref }}
+          # For example: "master" for a build of the 'master' branch
+          # Other formats exist for builds on pull requests
+          BUILD_SOURCE_BRANCH: ${{ github.ref_name }}
+          # "push" or "pull_request" (see 'on:')
+          EVENT_NAME: ${{ github.event_name }}
+        run: |
+          set -e
+          echo "Variables: PR_TARGET_BRANCH=${PR_TARGET_BRANCH} PR_SOURCE_BRANCH=${PR_SOURCE_BRANCH} BUILD_SOURCE_BRANCH=${BUILD_SOURCE_BRANCH}"
+          curl -fsSL https://gitlab.com/illwieckz/git-checkout-modules/raw/master/git-checkout-modules -o ~/git-checkout-modules
+          SYNC_ARGS=()
+          if [[ "$EVENT_NAME" == pull_request ]]; then
+              SYNC_ARGS=("--sub-ref=${PR_TARGET_BRANCH}:has=/sync" "--sub-ref=${PR_SOURCE_BRANCH}:has=/sync")
+          else  # It is a branch build
+              SYNC_ARGS=("--sub-ref=${BUILD_SOURCE_BRANCH}:has=/sync")
+          fi
+          echo "${#SYNC_ARGS[@]} branch-name-based checkout arg(s): ${SYNC_ARGS[@]}"
+          bash ~/git-checkout-modules --update "${SYNC_ARGS[@]}" --print
+
+      - name: Build
+        shell: bash
+        run: |
+          set -e
+          set -x
+          cmake --version
+          export CFLAGS='-Wno-c++14-extensions'
+          export CXXFLAGS='-Wno-c++14-extensions'
+          cmake -Wdev -Wdeprecated -DUSE_PRECOMPILED_HEADER=0 -DUSE_WERROR=1 -DBE_VERBOSE=1 -DCMAKE_BUILD_TYPE=Release -DBUILD_DUMMY_APP=1 -DBUILD_DUMMY_GAMELOGIC=1 -DBUILD_TESTS=1 -H. -Bbuild
+          cmake --build build -- -j`sysctl -n hw.logicalcpu`
+
+      - name: Test
+        shell: bash
+        run: |
+          set -e
+          build/test-ttyclient -pakpath pkg -set fs_basepak daemon -set vm.cgame.type 3
+
+  linux:
+    name: Linux ${{ matrix.name }}
+    runs-on: ubuntu-24.04
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - name: GCC
+            build_type: Release
+            c_compiler: gcc
+            cxx_compiler: g++
+            extra_packages: ''
+            extra_installs: ''
+            toolchain_file: ''
+          - name: Clang
+            build_type: Release
+            c_compiler: clang
+            cxx_compiler: clang++
+            extra_packages: ''
+            extra_installs: ''
+            toolchain_file: ''
+          - name: Mingw
+            build_type: Debug
+            c_compiler: x86_64-w64-mingw32-gcc
+            cxx_compiler: x86_64-w64-mingw32-g++
+            extra_packages: gcc-mingw-w64-x86-64 g++-mingw-w64-x86-64 mingw-w64-x86-64-dev
+            extra_installs: sudo update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix ; sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
+            toolchain_file: cmake/cross-toolchain-mingw64.cmake
+
+    steps:
+      - uses: actions/checkout@v7
+
+      - name: Check out submodules
+        shell: bash
+        env:
+          # For example: "master" (on pull requests only)
+          PR_TARGET_BRANCH: ${{ github.base_ref }}
+          # Target branch name, on pull requests only. Even if the branch comes from an external
+          # repo it is just the bare branch name, for example "new-feature".
+          PR_SOURCE_BRANCH: ${{ github.head_ref }}
+          # For example: "master" for a build of the 'master' branch
+          # Other formats exist for builds on pull requests
+          BUILD_SOURCE_BRANCH: ${{ github.ref_name }}
+          # "push" or "pull_request" (see 'on:')
+          EVENT_NAME: ${{ github.event_name }}
+        run: |
+          set -e
+          echo "Variables: PR_TARGET_BRANCH=${PR_TARGET_BRANCH} PR_SOURCE_BRANCH=${PR_SOURCE_BRANCH} BUILD_SOURCE_BRANCH=${BUILD_SOURCE_BRANCH}"
+          curl -fsSL https://gitlab.com/illwieckz/git-checkout-modules/raw/master/git-checkout-modules -o ~/git-checkout-modules
+          SYNC_ARGS=()
+          if [[ "$EVENT_NAME" == pull_request ]]; then
+              SYNC_ARGS=("--sub-ref=${PR_TARGET_BRANCH}:has=/sync" "--sub-ref=${PR_SOURCE_BRANCH}:has=/sync")
+          else  # It is a branch build
+              SYNC_ARGS=("--sub-ref=${BUILD_SOURCE_BRANCH}:has=/sync")
+          fi
+          echo "${#SYNC_ARGS[@]} branch-name-based checkout arg(s): ${SYNC_ARGS[@]}"
+          bash ~/git-checkout-modules --update "${SYNC_ARGS[@]}" --print
+
+      - name: Install deps
+        shell: bash
+        run: |
+          set -e
+          sudo apt-get update
+          sudo apt-get -y -q --no-install-recommends install zlib1g-dev libncursesw5-dev nettle-dev libgmp-dev libcurl4-gnutls-dev libogg-dev libvorbis-dev libopusfile-dev libwebp-dev libjpeg8-dev libpng-dev libfreetype6-dev libglew-dev libopenal-dev liblua5.2-dev ninja-build ${{ matrix.extra_packages }}
+          ${{ matrix.extra_installs }}
+
+      - name: Build
+        shell: bash
+        run: |
+          set -e
+          cmake --version
+          cmake -G "Ninja" -Wdev -Wdeprecated -DCMAKE_TOOLCHAIN_FILE=${{ matrix.toolchain_file }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} -DCMAKE_CXX_COMPILER=${{ matrix.cxx_compiler }} -DUSE_PRECOMPILED_HEADER=0 -DUSE_WERROR=1 -DBE_VERBOSE=1 -DBUILD_DUMMY_APP=1 -DBUILD_DUMMY_GAMELOGIC=1 -DBUILD_TESTS=1 -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} -H. -Bbuild
+          cmake --build build -- -j`nproc`
+
+      - name: Test
+        if: matrix.toolchain_file == ''
+        shell: bash
+        run: |
+          set -e
+          SDL_VIDEODRIVER=offscreen ALSOFT_DRIVERS=null build/test-client -pakpath pkg -set fs_basepak daemon -set vm.cgame.type 3
diff --git a/README.md b/README.md
index 69c8cd83bb..10f26c3829 100644
--- a/README.md
+++ b/README.md
@@ -11,10 +11,6 @@ Dæmon is the standalone game engine that powers the multiplayer first person sh
 [![Matrix](https://img.shields.io/badge/matrix-Unvanquished-9cf?logo=matrix)](https://matrix.to/#/!WnuetRiQZJNBTKwMrF:matrix.org?via=matrix.org)
 [![Discord](https://img.shields.io/badge/discord-Unvanquished-9cf?logo=discord)](https://discord.gg/usuDT9Pyna)
 
-Windows|macOS|Linux
--|-|-
-[![AppVeyor branch](https://img.shields.io/appveyor/ci/DolceTriade/daemon/master.svg)](https://ci.appveyor.com/project/DolceTriade/daemon/history)|[![Azure branch](https://img.shields.io/azure-devops/build/UnvanquishedDevelopment/51482765-8c0b-4b28-a82c-09554ed6887e/1/master.svg)](https://dev.azure.com/UnvanquishedDevelopment/Daemon/_build?definitionId=1)| [![Azure branch](https://img.shields.io/azure-devops/build/UnvanquishedDevelopment/51482765-8c0b-4b28-a82c-09554ed6887e/1/master.svg)](https://dev.azure.com/UnvanquishedDevelopment/Daemon/_build?definitionId=1)
-
 ℹ️ We provide ready-to-use downloads for the Unvanquished game on the [Unvanquished download page](https://unvanquished.net/download/), builds of the Dæmon engine are included.
 
 ℹ️ The Unvanquished game logic source code can be found there: [github.com/Unvanquished/Unvanquished](https://github.com/Unvanquished/Unvanquished).
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
deleted file mode 100644
index 4140a21f14..0000000000
--- a/azure-pipelines.yml
+++ /dev/null
@@ -1,135 +0,0 @@
-# Documentation: https://wiki.unvanquished.net/wiki/Continuous_integration
-
-trigger:
-  branches:
-    include:
-      - master
-      - 'for-*.*.*/sync' # Next-release branch
-
-pr:
-  branches:
-    include:
-      - '*'
-  paths:
-    include:
-      - azure-pipelines.yml
-      # The rest of this list should stay in sync with .appveyor.yml
-      - src/
-      - libs/
-      - cmake/
-      - CMakeLists.txt
-      - '*.cmake'
-      - .gitmodules
-
-jobs:
-  - job: Mac
-    pool:
-      vmImage: 'macOS-15'
-    steps:
-    - bash: |
-        set -e
-        echo "Variables: PR_TARGET_BRANCH=${PR_TARGET_BRANCH} PR_SOURCE_REF=${PR_SOURCE_REF} BUILD_SOURCE_BRANCH=${BUILD_SOURCE_BRANCH}"
-        curl -fsSL https://gitlab.com/illwieckz/git-checkout-modules/raw/master/git-checkout-modules -o ~/git-checkout-modules
-        if ! [[ "$PR_SOURCE_REF" == '$('* ]]; then  # It is a pull request
-            SOURCE_BRANCH=$(sed -e 's!^refs/heads/users/[^/]*/!!' <<< "$PR_SOURCE_REF")
-            SYNC_ARGS=("--sub-ref=${PR_TARGET_BRANCH}:has=/sync" "--sub-ref=${SOURCE_BRANCH}:has=/sync")
-        elif [[ "$BUILD_SOURCE_BRANCH" == refs/heads/* ]]; then  # It is a branch build
-            BRANCH=$(sed -e 's!^refs/heads/!!' <<< "$BUILD_SOURCE_BRANCH")
-            SYNC_ARGS=("--sub-ref=${BRANCH}:has=/sync")
-        fi
-        echo "${#SYNC_ARGS[@]} branch-name-based checkout arg(s): ${SYNC_ARGS[@]}"
-        bash ~/git-checkout-modules --update ${SYNC_ARGS[@]} --print
-      env:
-        # For example: "master" (on pull requests only)
-        PR_TARGET_BRANCH: $(System.PullRequest.TargetBranch)
-        # For example: "0.52.0/sync" (pull request from within repository)
-        # For example: "refs/heads/users/raisa/new-feature" (pull request from other user)
-        # For example: "$(System.PullRequest.TargetBranch)" (when it's not a PR-triggered build)
-        PR_SOURCE_REF: $(System.PullRequest.SourceBranch)
-        # For example: "refs/heads/master" for a build of the 'master' branch
-        # Other formats exist for builds on pull requests or tags
-        BUILD_SOURCE_BRANCH: $(Build.SourceBranch)
-      displayName: 'Check out submodules'
-    - bash: |
-        set -e
-        set -x
-        cmake --version
-        export CFLAGS='-Wno-c++14-extensions'
-        export CXXFLAGS='-Wno-c++14-extensions'
-        cmake -Wdev -Wdeprecated -DUSE_PRECOMPILED_HEADER=0 -DUSE_WERROR=1 -DBE_VERBOSE=1 -DCMAKE_BUILD_TYPE=Release -DBUILD_DUMMY_APP=1 -DBUILD_DUMMY_GAMELOGIC=1 -DBUILD_TESTS=1 -H. -Bbuild
-        cmake --build build -- -j`sysctl -n hw.logicalcpu`
-      displayName: 'Build'
-    - bash: |
-        set -e
-        build/test-ttyclient -pakpath pkg -set fs_basepak daemon -set vm.cgame.type 3
-      displayName: 'Test'
-
-  - job: Linux
-    pool:
-      vmImage: 'ubuntu-24.04'
-    strategy:
-      matrix:
-        GCC:
-          BUILD_TYPE: Release
-          C_COMPILER: gcc
-          CXX_COMPILER: g++
-          EXTRA_PACKAGES:
-          EXTRA_INSTALLS:
-          TOOLCHAIN_FILE:
-        Clang:
-          BUILD_TYPE: Release
-          C_COMPILER: clang
-          CXX_COMPILER: clang++
-          EXTRA_PACKAGES:
-          EXTRA_INSTALLS:
-          TOOLCHAIN_FILE:
-        Mingw:
-          BUILD_TYPE: Debug
-          C_COMPILER: x86_64-w64-mingw32-gcc
-          CXX_COMPILER: x86_64-w64-mingw32-g++
-          EXTRA_PACKAGES: gcc-mingw-w64-x86-64 g++-mingw-w64-x86-64 mingw-w64-x86-64-dev
-          EXTRA_INSTALLS: sudo update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix ; sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
-          TOOLCHAIN_FILE: cmake/cross-toolchain-mingw64.cmake
-
-    steps:
-    - bash: |
-        set -e
-        echo "Variables: PR_TARGET_BRANCH=${PR_TARGET_BRANCH} PR_SOURCE_REF=${PR_SOURCE_REF} BUILD_SOURCE_BRANCH=${BUILD_SOURCE_BRANCH}"
-        curl -fsSL https://gitlab.com/illwieckz/git-checkout-modules/raw/master/git-checkout-modules -o ~/git-checkout-modules
-        if ! [[ "$PR_SOURCE_REF" == '$('* ]]; then  # It is a pull request
-            SOURCE_BRANCH=$(sed -e 's!^refs/heads/users/[^/]*/!!' <<< "$PR_SOURCE_REF")
-            SYNC_ARGS=("--sub-ref=${PR_TARGET_BRANCH}:has=/sync" "--sub-ref=${SOURCE_BRANCH}:has=/sync")
-        elif [[ "$BUILD_SOURCE_BRANCH" == refs/heads/* ]]; then  # It is a branch build
-            BRANCH=$(sed -e 's!^refs/heads/!!' <<< "$BUILD_SOURCE_BRANCH")
-            SYNC_ARGS=("--sub-ref=${BRANCH}:has=/sync")
-        fi
-        echo "${#SYNC_ARGS[@]} branch-name-based checkout arg(s): ${SYNC_ARGS[@]}"
-        bash ~/git-checkout-modules --update ${SYNC_ARGS[@]} --print
-      env:
-        # For example: "master" (on pull requests only)
-        PR_TARGET_BRANCH: $(System.PullRequest.TargetBranch)
-        # For example: "0.52.0/sync" (pull request from within repository)
-        # For example: "refs/heads/users/raisa/new-feature" (pull request from other user)
-        # For example: "$(System.PullRequest.TargetBranch)" (when it's not a PR-triggered build)
-        PR_SOURCE_REF: $(System.PullRequest.SourceBranch)
-        # For example: "refs/heads/master" for a build of the 'master' branch
-        # Other formats exist for builds on pull requests or tags
-        BUILD_SOURCE_BRANCH: $(Build.SourceBranch)
-      displayName: 'Check out submodules'
-    - bash: |
-        set -e
-        sudo apt-get update
-        sudo apt-get -y -q --no-install-recommends install zlib1g-dev libncursesw5-dev nettle-dev libgmp-dev libcurl4-gnutls-dev libogg-dev libvorbis-dev libopusfile-dev libwebp-dev libjpeg8-dev libpng-dev libfreetype6-dev libglew-dev libopenal-dev liblua5.2-dev ninja-build $(EXTRA_PACKAGES)
-        $(EXTRA_INSTALLS)
-      displayName: 'Install deps'
-    - bash: |
-        set -e
-        cmake --version
-        cmake -G "Ninja" -Wdev -Wdeprecated -DCMAKE_TOOLCHAIN_FILE=$(TOOLCHAIN_FILE) -DCMAKE_C_COMPILER=$(C_COMPILER) -DCMAKE_CXX_COMPILER=$(CXX_COMPILER) -DUSE_PRECOMPILED_HEADER=0 -DUSE_WERROR=1 -DBE_VERBOSE=1 -DBUILD_DUMMY_APP=1 -DBUILD_DUMMY_GAMELOGIC=1 -DBUILD_TESTS=1 -DCMAKE_BUILD_TYPE=$(BUILD_TYPE) -H. -Bbuild
-        cmake --build build -- -j`nproc`
-      displayName: 'Build'
-    - bash: |
-        set -e
-        SDL_VIDEODRIVER=offscreen ALSOFT_DRIVERS=null build/test-client -pakpath pkg -set fs_basepak daemon -set vm.cgame.type 3
-      condition: "and(succeeded(), eq(variables.TOOLCHAIN_FILE, ''))"
-      displayName: 'Test'