diff --git a/.github/workflows/package-release.yml b/.github/workflows/package-release.yml
index 1c0e350..d869ee3 100644
--- a/.github/workflows/package-release.yml
+++ b/.github/workflows/package-release.yml
@@ -13,18 +13,30 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - name: linux-amd64
+          - name: linux-amd64-sdl3
             runner: ubuntu-24.04
             platform: linux
             arch: amd64
-          - name: linux-arm64
+            sdl_version: SDL3
+          - name: linux-arm64-sdl3
             runner: ubuntu-24.04-arm64
             platform: linux
             arch: arm64
+            sdl_version: SDL3
+          - name: linux-amd64-sdl
+            runner: ubuntu-24.04
+            platform: linux
+            arch: amd64
+            sdl_version: sdl
+          - name: linux-arm64-sdl
+            runner: ubuntu-24.04-arm64
+            platform: linux
+            arch: arm64
+            sdl_version: sdl
     runs-on: ${{ matrix.runner }}
     env:
-      BUILD_DIR: build/${{ matrix.platform }}-${{ matrix.arch }}
-      ZIP_NAME: sdl3_app-${{ matrix.platform }}-${{ matrix.arch }}.zip
+      BUILD_DIR: build/${{ matrix.platform }}-${{ matrix.arch }}-${{ matrix.sdl_version }}
+      ZIP_NAME: sdl3_app-${{ matrix.platform }}-${{ matrix.arch }}-${{ matrix.sdl_version }}.zip
       PLATFORM_NAME: ${{ matrix.platform }}
     steps:
       - name: Checkout
@@ -33,7 +45,7 @@ jobs:
       - name: Download build artifact
         uses: actions/download-artifact@v4
         with:
-          name: build-${{ matrix.platform }}-${{ matrix.arch }}
+          name: build-${{ matrix.platform }}-${{ matrix.arch }}-${{ matrix.sdl_version }}
           path: .
 
       - name: Set up Python
diff --git a/.github/workflows/upload-build-artifact.yml b/.github/workflows/upload-build-artifact.yml
index 1ee901c..988e20e 100644
--- a/.github/workflows/upload-build-artifact.yml
+++ b/.github/workflows/upload-build-artifact.yml
@@ -12,15 +12,25 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - name: linux-amd64
+          - name: linux-amd64-sdl3
             platform: linux
             arch: amd64
-          - name: linux-arm64
+            sdl_version: SDL3
+          - name: linux-arm64-sdl3
             platform: linux
             arch: arm64
+            sdl_version: SDL3
+          - name: linux-amd64-sdl
+            platform: linux
+            arch: amd64
+            sdl_version: sdl
+          - name: linux-arm64-sdl
+            platform: linux
+            arch: arm64
+            sdl_version: sdl
     runs-on: ubuntu-24.04
     env:
-      BUILD_DIR: build/${{ matrix.platform }}-${{ matrix.arch }}
+      BUILD_DIR: build/${{ matrix.platform }}-${{ matrix.arch }}-${{ matrix.sdl_version }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -49,20 +59,22 @@ jobs:
         if: matrix.platform == 'linux'
         env:
           BUILD_DIR: ${{ env.BUILD_DIR }}
+          SDL_VERSION: ${{ matrix.sdl_version }}
         run: |
           docker run --rm \
             -e BUILD_DIR \
+            -e SDL_VERSION \
             -w /workspace \
             -v "${{ github.workspace }}:/workspace" \
             sdl3_app:${{ matrix.platform }}-${{ matrix.arch }} \
             bash -c 'set -euo pipefail
               if [ -d "$BUILD_DIR" ]; then rm -rf "$BUILD_DIR"; fi
               cp -a /conan_build "$BUILD_DIR"
-              cmake -S . -B "$BUILD_DIR" -DCMAKE_BUILD_TYPE=Release
+              cmake -S . -B "$BUILD_DIR" -DCMAKE_BUILD_TYPE=Release -DSDL_VERSION="$SDL_VERSION"
               cmake --build "$BUILD_DIR" --config Release'
 
       - name: Upload build artifact
         uses: actions/upload-artifact@v4
         with:
-          name: build-${{ matrix.platform }}-${{ matrix.arch }}
+          name: build-${{ matrix.platform }}-${{ matrix.arch }}-${{ matrix.sdl_version }}
           path: ${{ env.BUILD_DIR }}
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 02ea4d0..be587f3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,6 +51,13 @@ if(ENABLE_CLANG_TIDY)
     endif()
 endif()
 option(BUILD_SDL3_APP "Build the SDL3 Vulkan demo" ON)
+set(SDL_VERSION "SDL3" CACHE STRING "SDL version to use: SDL3 or sdl")
+set_property(CACHE SDL_VERSION PROPERTY STRINGS "SDL3" "sdl")
+
+if(BUILD_SDL3_APP AND NOT SDL_VERSION STREQUAL "SDL3")
+    message(STATUS "Disabling BUILD_SDL3_APP because SDL_VERSION is set to '${SDL_VERSION}' instead of SDL3")
+    set(BUILD_SDL3_APP OFF CACHE BOOL "Build the SDL3 Vulkan demo" FORCE)
+endif()
 
 set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -71,8 +78,19 @@ endif()
 
 if(BUILD_SDL3_APP)
     find_package(Vulkan REQUIRED)
-    find_package(SDL3 CONFIG REQUIRED)
 endif()
+
+# SDL is required for both the demo app and cube_script_tests (used by audio_player)
+if(SDL_VERSION STREQUAL "SDL3")
+    find_package(SDL3 CONFIG REQUIRED)
+    set(SDL_TARGET SDL3::SDL3)
+elseif(SDL_VERSION STREQUAL "sdl")
+    find_package(SDL CONFIG REQUIRED)
+    set(SDL_TARGET SDL::SDL)
+else()
+    message(FATAL_ERROR "Invalid SDL_VERSION: ${SDL_VERSION}. Must be SDL3 or sdl")
+endif()
+
 find_package(lua CONFIG REQUIRED)
 find_package(CLI11 CONFIG REQUIRED)
 find_package(rapidjson CONFIG REQUIRED)
@@ -97,22 +115,25 @@ if(BUILD_SDL3_APP)
             src/script/cube_script.cpp
         )
     target_include_directories(sdl3_app PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/src")
-    target_link_libraries(sdl3_app PRIVATE sdl::sdl Vulkan::Vulkan lua::lua CLI11::CLI11 rapidjson assimp::assimp Bullet::Bullet glm::glm Vorbis::vorbisfile Vorbis::vorbis)
+    target_link_libraries(sdl3_app PRIVATE ${SDL_TARGET} Vulkan::Vulkan lua::lua CLI11::CLI11 rapidjson assimp::assimp Bullet::Bullet glm::glm Vorbis::vorbisfile Vorbis::vorbis)
     target_compile_definitions(sdl3_app PRIVATE SDL_MAIN_HANDLED)
 
-    file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/shaders" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
-    file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/scripts" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+    if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/shaders")
+        file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/shaders" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+    endif()
+
+    if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/scripts")
+        file(COPY "${CMAKE_CURRENT_SOURCE_DIR}/scripts" DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
+    endif()
 endif()
 
 enable_testing()
 
-if(BUILD_SDL3_APP)
-    add_executable(cube_script_tests
-        tests/test_cube_script.cpp
-        src/script/cube_script.cpp
-        src/app/audio_player.cpp
-    )
-    target_include_directories(cube_script_tests PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/src")
-    target_link_libraries(cube_script_tests PRIVATE sdl::sdl lua::lua assimp::assimp Bullet::Bullet glm::glm Vorbis::vorbisfile Vorbis::vorbis)
-    add_test(NAME cube_script_tests COMMAND cube_script_tests)
-endif()
+add_executable(cube_script_tests
+    tests/test_cube_script.cpp
+    src/script/cube_script.cpp
+    src/app/audio_player.cpp
+)
+target_include_directories(cube_script_tests PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/src")
+target_link_libraries(cube_script_tests PRIVATE ${SDL_TARGET} lua::lua assimp::assimp Bullet::Bullet glm::glm Vorbis::vorbisfile Vorbis::vorbis)
+add_test(NAME cube_script_tests COMMAND cube_script_tests)