diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5dea7c9f40..bc0225153f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -107,3 +107,19 @@ jobs:
     with:
       version: ${{ needs.source.outputs.version }}
       trigger_type: ${{ needs.source.outputs.trigger_type }}
+
+  upload-gog:
+    name: Upload (GOG)
+    needs:
+    - source
+    - linux
+    - macos
+    - windows
+
+    if: needs.source.outputs.trigger_type == 'new-tag'
+
+    uses: ./.github/workflows/upload-gog.yml
+    secrets: inherit
+
+    with:
+      version: ${{ needs.source.outputs.version }}
diff --git a/.github/workflows/upload-gog.yml b/.github/workflows/upload-gog.yml
new file mode 100644
index 0000000000..b4a591fdcc
--- /dev/null
+++ b/.github/workflows/upload-gog.yml
@@ -0,0 +1,124 @@
+name: Upload (GOG)
+
+on:
+  workflow_call:
+    inputs:
+      version:
+        required: true
+        type: string
+
+jobs:
+  upload:
+    name: Upload (GOG)
+
+    runs-on: ubuntu-20.04
+
+    steps:
+    - name: Download all bundles
+      uses: actions/download-artifact@v3
+
+    - name: Install GOG Galaxy Build Creator
+      run: |
+        wget https://cdn.gog.com/open/galaxy/pipeline/build_creator/gnu-linux/GOGGalaxyBuildCreator-1.4.0.AppImage
+        7z x GOGGalaxyBuildCreator-1.4.0.AppImage
+        chmod +x ./app/GOGGalaxyPipelineBuilder
+
+    - name: Install OpenGFX
+      shell: bash
+      run: |
+        mkdir -p gog/opengfx/baseset
+        cd gog/opengfx/baseset
+
+        echo "::group::Download OpenGFX"
+        curl -L https://cdn.openttd.org/opengfx-releases/7.1/opengfx-7.1-all.zip -o opengfx-all.zip
+        echo "::endgroup::"
+
+        echo "::group::Unpack OpenGFX"
+        unzip opengfx-all.zip
+        echo "::endgroup::"
+
+        rm -f opengfx-all.zip
+
+    - name: Install OpenMSX
+      shell: bash
+      run: |
+        mkdir -p gog/openmsx/baseset
+        cd gog/openmsx/baseset
+
+        echo "::group::Download OpenMSX"
+        curl -L https://cdn.openttd.org/openmsx-releases/0.4.2/openmsx-0.4.2-all.zip -o openmsx-all.zip
+        echo "::endgroup::"
+
+        echo "::group::Unpack OpenGFX"
+        unzip openmsx-all.zip
+        tar xf openmsx-*.tar
+        echo "::endgroup::"
+
+        rm -f openmsx-all.zip openmsx-*.tar
+
+    - name: Install OpenSFX
+      shell: bash
+      run: |
+        mkdir -p gog/opensfx/baseset
+        cd gog/opensfx/baseset
+
+        echo "::group::Download OpenSFX"
+        curl -L https://cdn.openttd.org/opensfx-releases/1.0.3/opensfx-1.0.3-all.zip -o opensfx-all.zip
+        echo "::endgroup::"
+
+        echo "::group::Unpack OpenSFX"
+        unzip opensfx-all.zip
+        tar xf opensfx-*.tar
+        echo "::endgroup::"
+
+        rm -f opensfx-all.zip opensfx-*.tar
+
+    - name: Upload to GOG
+      run: |
+        echo "::group::Extracting source"
+        mkdir source
+        (
+          cd source
+          tar -xf ../internal-source/source.tar.gz --strip-components=1
+        )
+        echo "::endgroup::"
+
+        (
+          cd gog
+
+          echo "::group::Prepare Win32"
+          unzip ../openttd-windows-x86/openttd-*-windows-win32.zip
+          mv openttd-*-windows-win32 win32
+          echo "::endgroup::"
+
+          echo "::group::Prepare Win64"
+          unzip ../openttd-windows-x64/openttd-*-windows-win64.zip
+          mv openttd-*-windows-win64 win64
+          echo "::endgroup::"
+
+          echo "::group::Prepare macOS"
+          mkdir macos
+          (
+            cd macos
+            unzip ../../openttd-macos-universal/openttd-*-macos-universal.zip
+          )
+          echo "::endgroup::"
+
+          echo "::group::Prepare Linux"
+          tar xvf ../openttd-linux-generic/openttd-*-linux-generic-amd64.tar.xz
+          mv openttd-*-linux-generic-amd64 linux
+          echo "::endgroup::"
+
+          echo "::group::Preparing build files"
+          cp ../source/os/gog/*.json .
+          for json in $(ls *.json); do
+            sed -i 's/VERSION/${{ inputs.version }}/g;s/CLIENT_ID/${{ secrets.GOG_CLIENT_ID }}/g;s/CLIENT_SECRET/${{ secrets.GOG_CLIENT_SECRET }}/g' ${json}
+          done
+          echo "::endgroup::"
+
+          echo "::group::Upload to GOG"
+          ../app/GOGGalaxyPipelineBuilder build-game --username "${{ secrets.GOG_USERNAME }}" --password "${{ secrets.GOG_PASSWORD }}" --branch Testing windows.json
+          ../app/GOGGalaxyPipelineBuilder build-game --username "${{ secrets.GOG_USERNAME }}" --password "${{ secrets.GOG_PASSWORD }}" --branch Testing macos.json
+          ../app/GOGGalaxyPipelineBuilder build-game --username "${{ secrets.GOG_USERNAME }}" --password "${{ secrets.GOG_PASSWORD }}" --branch Testing linux.json
+          echo "::endgroup::"
+        )
diff --git a/os/gog/linux.json b/os/gog/linux.json
new file mode 100755
index 0000000000..47e80fd255
--- /dev/null
+++ b/os/gog/linux.json
@@ -0,0 +1,64 @@
+{
+    "project": {
+        "baseProductId": "1293297882",
+        "clientId": "CLIENT_ID",
+        "clientSecret": "CLIENT_SECRET",
+        "version": "VERSION",
+        "installDirectory": "OpenTTD",
+        "name": "OpenTTD",
+        "platform": "gnu-linux",
+        "tags": [
+            "editor_v_1_4_0"
+        ],
+        "languageMode": "together",
+        "products": [
+            {
+                "name": "OpenTTD",
+                "productId": "1293297882",
+                "depots": [
+                    {
+                        "name": "Linux",
+                        "folder": "linux",
+                        "languages": [
+                            "en-US"
+                        ]
+                    },
+                    {
+                        "name": "OpenGFX",
+                        "folder": "opengfx",
+                        "languages": [
+                            "en-US"
+                        ]
+                    },
+                    {
+                        "name": "OpenMSX",
+                        "folder": "openmsx",
+                        "languages": [
+                            "en-US"
+                        ]
+                    },
+                    {
+                        "name": "OpenSFX",
+                        "folder": "opensfx",
+                        "languages": [
+                            "en-US"
+                        ]
+                    }
+                ],
+                "tasks": [
+                    {
+                        "type": "FileTask",
+                        "name": "OpenTTD",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "category": "game",
+                        "path": "openttd",
+                        "isPrimary": true
+                    }
+                ],
+                "supportDepots": []
+            }
+        ]
+    }
+}
diff --git a/os/gog/macos.json b/os/gog/macos.json
new file mode 100755
index 0000000000..8ce9a02be7
--- /dev/null
+++ b/os/gog/macos.json
@@ -0,0 +1,65 @@
+{
+    "project": {
+        "baseProductId": "1293297882",
+        "clientId": "CLIENT_ID",
+        "clientSecret": "CLIENT_SECRET",
+        "version": "VERSION",
+        "installDirectory": "OpenTTD",
+        "name": "OpenTTD",
+        "platform": "osx",
+        "tags": [
+            "editor_v_1_4_0"
+        ],
+        "languageMode": "together",
+        "products": [
+            {
+                "name": "OpenTTD",
+                "productId": "1293297882",
+                "depots": [
+                    {
+                        "name": "MacOS",
+                        "folder": "macos",
+                        "languages": [
+                            "en-US"
+                        ]
+                    },
+                    {
+                        "name": "OpenGFX",
+                        "folder": "opengfx",
+                        "languages": [
+                            "en-US"
+                        ]
+                    },
+                    {
+                        "name": "OpenMSX",
+                        "folder": "openmsx",
+                        "languages": [
+                            "en-US"
+                        ]
+                    },
+                    {
+                        "name": "OpenSFX",
+                        "folder": "opensfx",
+                        "languages": [
+                            "en-US"
+                        ]
+                    }
+                ],
+                "tasks": [
+                    {
+                        "type": "FileTask",
+                        "name": "OpenTTD",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "category": "game",
+                        "path": "OpenTTD.app/Contents/MacOS/openttd",
+                        "isPrimary": true
+                    }
+                ],
+                "supportDepots": []
+            }
+        ]
+    }
+}
+
diff --git a/os/gog/windows.json b/os/gog/windows.json
new file mode 100755
index 0000000000..8582abb060
--- /dev/null
+++ b/os/gog/windows.json
@@ -0,0 +1,94 @@
+{
+    "project": {
+        "baseProductId": "1293297882",
+        "clientId": "CLIENT_ID",
+        "clientSecret": "CLIENT_SECRET",
+        "version": "VERSION",
+        "installDirectory": "OpenTTD",
+        "name": "OpenTTD",
+        "platform": "windows",
+        "tags": [
+            "editor_v_1_4_0"
+        ],
+        "languageMode": "together",
+        "products": [
+            {
+                "name": "OpenTTD",
+                "productId": "1293297882",
+                "depots": [
+                    {
+                        "name": "Win32",
+                        "folder": "win32",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "osBitness": [
+                            "32"
+                        ]
+                    },
+                    {
+                        "name": "Win64",
+                        "folder": "win64",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "osBitness": [
+                            "64"
+                        ]
+                    },
+                    {
+                        "name": "OpenGFX",
+                        "folder": "opengfx",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "osBitness": [
+                            "32",
+                            "64"
+                        ]
+                    },
+                    {
+                        "name": "OpenMSX",
+                        "folder": "openmsx",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "osBitness": [
+                            "32",
+                            "64"
+                        ]
+                    },
+                    {
+                        "name": "OpenSFX",
+                        "folder": "opensfx",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "osBitness": [
+                            "32",
+                            "64"
+                        ]
+                    }
+                ],
+                "tasks": [
+                    {
+                        "type": "FileTask",
+                        "name": "OpenTTD",
+                        "languages": [
+                            "en-US"
+                        ],
+                        "category": "game",
+                        "path": "openttd.exe",
+                        "isPrimary": true,
+                        "osBitness": [
+                            "32",
+                            "64"
+                        ]
+                    }
+                ],
+                "supportDepots": []
+            }
+        ],
+        "scriptInterpreter": true
+    }
+}