diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 751d6b1..83c9c9d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -101,6 +101,24 @@ jobs:
           name: bin_windows
           path: ./Dev/Godot/addons/effekseer/bin
 
+  windows-debug:
+    name: Build for Windows (Debug)
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Update Submodules
+        run: git submodule update --init
+      - name: Build binaries
+        run: |
+          python -m pip install scons
+          python Dev/Cpp/build.py platform=windows debug=yes
+        shell: cmd
+      - name: Upload binaries
+        uses: actions/upload-artifact@v4
+        with:
+          name: bin_windows_debug
+          path: ./Dev/Godot/addons/effekseer/bin
+
   web:
     name: Build for Web
     runs-on: ubuntu-latest
diff --git a/Dev/Cpp/build.py b/Dev/Cpp/build.py
index ccb1803..9240d7d 100644
--- a/Dev/Cpp/build.py
+++ b/Dev/Cpp/build.py
@@ -16,55 +16,69 @@ def replace_word(file_name, target_str, replace_str):
     with open(file_name, "w") as file:
         file.write(text)
 
-def import_generate_bindings():
+def import_generate_bindings(arch: str):
+    bits = "32" if "32" in arch else "64"
     binding_generator = __import__("godot-cpp.binding_generator").binding_generator
     cwd = os.getcwd()
     os.chdir(os.path.join(os.path.dirname(script_path), "godot-cpp"))
-    binding_generator.generate_bindings("gdextension/extension_api.json", False)
+    binding_generator.generate_bindings("gdextension/extension_api.json", False, bits=bits)
     os.chdir(cwd)
 
-import_generate_bindings()
-
 os.chdir(os.path.dirname(script_path))
 
+is_debug = False
+options = []
+
+if "debug=yes" in sys.argv:
+    options.append("target=template_debug")
+    options.append("dev_build=yes")
+    is_debug = True
+
 if "platform=windows" in sys.argv:
     os.makedirs("../Godot/addons/effekseer/bin/windows", exist_ok = True)
 
-    subprocess.run("scons platform=windows arch=x86_32 target=template_release", shell = True, check=True)
-    subprocess.run("scons platform=windows arch=x86_64 target=template_release", shell = True, check=True)
+    for arch in ["x86_32", "x86_64"]:
+        import_generate_bindings(arch)
+        subprocess.run(["scons", "platform=windows", f"arch={arch}"] + options, check=True)
+
+    if is_debug:
+        shutil.copy2("bin/windows/libeffekseer.x86_32.pdb", "../Godot/addons/effekseer/bin/windows/libeffekseer.x86_32.pdb")
+        shutil.copy2("bin/windows/libeffekseer.x86_64.pdb", "../Godot/addons/effekseer/bin/windows/libeffekseer.x86_64.pdb")
 
 elif "platform=macos" in sys.argv:
     os.makedirs("../Godot/addons/effekseer/bin/macos", exist_ok = True)
 
-    subprocess.run("scons platform=macos arch=x86_64 target=template_release", shell = True, check=True)
-    
-    subprocess.run("lipo -create ../Godot/addons/effekseer/bin/macos/libeffekseer.x86_64.dylib -output ../Godot/addons/effekseer/bin/macos/libeffekseer.dylib", shell = True, check=True)
-    os.remove("../Godot/addons/effekseer/bin/macos/libeffekseer.x86_64.dylib")
+    import_generate_bindings("64")
+    subprocess.run(["scons", "platform=macos", "arch=universal"] + options, check=True)
+
+    os.rename("../Godot/addons/effekseer/bin/macos/libeffekseer.universal.dylib", "../Godot/addons/effekseer/bin/macos/libeffekseer.dylib")
 
 elif "platform=android" in sys.argv:
     os.makedirs("../Godot/addons/effekseer/bin/android", exist_ok = True)
 
-    subprocess.run("scons platform=android arch=arm32 target=template_release", shell = True, check=True)
-    subprocess.run("scons platform=android arch=arm64 target=template_release", shell = True, check=True)
-    subprocess.run("scons platform=android arch=x86_32 target=template_release", shell = True, check=True)
-    subprocess.run("scons platform=android arch=x86_64 target=template_release", shell = True, check=True)
+    for arch in ["arm32", "arm64", "x86_32", "x86_64"]:
+        import_generate_bindings(arch)
+        subprocess.run(["scons", "platform=android", f"arch={arch}", "use_static_cpp=yes"] + options, check=True)
 
 elif "platform=ios" in sys.argv:
     os.makedirs("../Godot/addons/effekseer/bin/ios", exist_ok = True)
 
-    subprocess.run("scons platform=ios arch=arm64 target=template_release", shell = True, check=True)
+    import_generate_bindings("arm64")
+    subprocess.run(["scons", "platform=ios", "arch=arm64"] + options, check=True)
 
-    subprocess.run("lipo -create ../Godot/addons/effekseer/bin/ios/libeffekseer.arm64.dylib -output ../Godot/addons/effekseer/bin/ios/libeffekseer.dylib", shell = True, check=True)
-    os.remove("../Godot/addons/effekseer/bin/ios/libeffekseer.arm64.dylib")
+    os.rename("../Godot/addons/effekseer/bin/ios/libeffekseer.arm64.dylib", "../Godot/addons/effekseer/bin/ios/libeffekseer.dylib")
 
 elif "platform=linux" in sys.argv:
     os.makedirs("../Godot/addons/effekseer/bin/linux", exist_ok = True)
 
-    subprocess.run("scons platform=linux arch=x86_32 target=template_release", shell = True, check=True)
-    subprocess.run("scons platform=linux arch=x86_64 target=template_release", shell = True, check=True)
+    for arch in ["x86_32", "x86_64"]:
+        import_generate_bindings(arch)
+        subprocess.run(["scons", "platform=linux", f"arch={arch}"] + options, check=True)
 
 elif "platform=web" in sys.argv:
     os.makedirs("../Godot/addons/effekseer/bin/web", exist_ok = True)
 
-    subprocess.run("scons platform=web arch=wasm32 target=template_release", shell = True, check=True)
+    import_generate_bindings("wasm32")
+    subprocess.run(["scons", "platform=web", "arch=wasm32"] + options, check=True)
+
     os.rename("../Godot/addons/effekseer/bin/web/libeffekseer.wasm32.wasm", "../Godot/addons/effekseer/bin/web/libeffekseer.wasm")