diff --git a/.github/workflows/Build.yml b/.github/workflows/Build.yml
index 15efd7d..96894dd 100644
--- a/.github/workflows/Build.yml
+++ b/.github/workflows/Build.yml
@@ -10,8 +10,67 @@ on:
   workflow_dispatch:
 
 jobs:
+  playtest:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        # branch:
+        #   - steam_legacy
+        #   - public
+        # mod:
+        # #   - valve
+        #   - cstrike
+        # #   - czero
+        # #   - dod
+        # #   - gearbox
+        # #   - tfc
+        # #   - ricochet
+        # #   - dmc
+        test: [
+          { type: 'rehlds',     file: 'cstrike-muliplayer-1',       desc: 'CS: Multiplayer' },
+          # { type: 'rehlds',     file: 'rehlds-phys-single1',        desc: 'Half-Life: Physics singleplayer' },
+          # { type: 'rehlds',     file: 'crossfire-1-multiplayer-1',  desc: 'Half-Life: Multiplayer on crossfire map' },
+          # { type: 'rehlds',     file: 'shooting-hl-1',              desc: 'Half-Life: Shooting with several weapons' },
+          # { type: 'regamedll',  file: 'cstrike-basic-1',            desc: 'CS: Testing jumping, scenarios, shooting etc' },
+        ]
+    env:
+        imageName: testdemos_local
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/cache@v4
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-docker-${{ matrix.test.type }}
+          restore-keys: |
+            ${{ runner.os }}-docker-
+        
+      - name: Prepare
+        working-directory: ./testdemos_files
+        run: rsync -a deps/${{ matrix.test.type }}/* .
+
+      - name: Build container
+        run: |
+          docker build \
+          --cache-from=type=gha \
+          --cache-to=type=gha,mode=max \
+          -t $imageName .
+
+      - name: Run test
+        if: false
+        env:
+          demo: ${{ matrix.test.file }}
+          desc: ${{ matrix.test.desc }}
+        run: |
+          docker run \
+            --env demo \
+            --env desc \
+            -t $imageName \
+            ./runTest.sh
 
   build:
+    if: false
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -34,7 +93,6 @@ jobs:
     steps:
     - uses: actions/checkout@v4.2.0
     - uses: docker/setup-buildx-action@v3.7.0
-
     - name: Log in to Docker Hub
       if: ${{ env.needToPush }}
       uses: docker/login-action@v3.3.0