diff --git a/Sources/CMakeLists.txt b/Sources/CMakeLists.txt
index 3ab91ce..752afcb 100644
--- a/Sources/CMakeLists.txt
+++ b/Sources/CMakeLists.txt
@@ -1,3 +1,4 @@
 add_subdirectory(SwiftFrontend)
 add_subdirectory(SDLSwift)
 add_subdirectory(CppBackend)
+add_subdirectory(SwiftBackend)
diff --git a/Sources/CppBackend/CMakeLists.txt b/Sources/CppBackend/CMakeLists.txt
index c118a0f..a5f92b8 100644
--- a/Sources/CppBackend/CMakeLists.txt
+++ b/Sources/CppBackend/CMakeLists.txt
@@ -2,5 +2,5 @@ add_library(CppBackend STATIC ball.hpp ball.cpp)
 set_property(TARGET CppBackend PROPERTY Swift_MODULE_NAME "CppBackend")
 set_property(TARGET CppBackend PROPERTY CXX_STANDARD 20)
 
-target_compile_options(CppBackend PUBLIC "$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>")
 target_include_directories(CppBackend PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
+target_compile_options(CppBackend PUBLIC "$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>")
diff --git a/Sources/SDLSwift/CMakeLists.txt b/Sources/SDLSwift/CMakeLists.txt
index 80cfa1a..182c487 100644
--- a/Sources/SDLSwift/CMakeLists.txt
+++ b/Sources/SDLSwift/CMakeLists.txt
@@ -1,7 +1,6 @@
 add_library(SDLSwift INTERFACE)
 set_property(TARGET SDLSwift PROPERTY Swift_MODULE_NAME "SDL3")
 
-target_compile_options(SDLSwift INTERFACE "$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>")
 target_include_directories(SDLSwift INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}")
 
 target_link_libraries(SDLSwift INTERFACE ${SDL3})
diff --git a/Sources/SDLSwift/module.modulemap b/Sources/SDLSwift/module.modulemap
index 77aad28..687dc63 100644
--- a/Sources/SDLSwift/module.modulemap
+++ b/Sources/SDLSwift/module.modulemap
@@ -1,3 +1,3 @@
-module SDL3 {
+module SDL3 [extern_c] {
   header "shim.h"
 }
diff --git a/Sources/SwiftBackend/Backend.swift b/Sources/SwiftBackend/Backend.swift
new file mode 100644
index 0000000..363d114
--- /dev/null
+++ b/Sources/SwiftBackend/Backend.swift
@@ -0,0 +1,7 @@
+import CppBackend
+
+public struct FuckYou {
+  public static func fuck() {
+    let _ = BallWorld()
+  }
+}
diff --git a/Sources/SwiftBackend/CMakeLists.txt b/Sources/SwiftBackend/CMakeLists.txt
new file mode 100644
index 0000000..01d617a
--- /dev/null
+++ b/Sources/SwiftBackend/CMakeLists.txt
@@ -0,0 +1,2 @@
+add_library(SwiftBackend STATIC Backend.swift)
+target_link_libraries(SwiftBackend PRIVATE CppBackend)
diff --git a/Sources/SwiftFrontend/Application.swift b/Sources/SwiftFrontend/Application.swift
index bb4f452..94ec74d 100644
--- a/Sources/SwiftFrontend/Application.swift
+++ b/Sources/SwiftFrontend/Application.swift
@@ -6,17 +6,18 @@
 //
 
 import Foundation
-import CppBackend
 import SDL3
+import SwiftBackend
 
 class Application {
   private var window: OpaquePointer? = nil
   private var renderer: OpaquePointer? = nil
 
-  private var balls = BallWorld()
   private var lastCounter: UInt64 = 0
 
   private func initialize() -> ApplicationExecutionState {
+    FuckYou.fuck()
+    
     guard SDL_Init(SDL_INIT_VIDEO) >= 0 else {
       print("SDL_Init() error: \(String(cString: SDL_GetError()))")
       return .exitFailure
@@ -39,15 +40,6 @@ class Application {
     SDL_SetRenderVSync(renderer, 1)
     SDL_SetRenderLogicalPresentation(renderer, 512, 512, SDL_LOGICAL_PRESENTATION_LETTERBOX, SDL_SCALEMODE_BEST)
 
-    let ballOrigin = SIMD2(Float(width), Float(height)) * 0.5
-    for _ in 0..<10 {
-      balls.add(
-        ballOrigin,
-        Float(arc4random()) / Float(UInt32.max),
-        Float(arc4random_uniform(32 - 3) + 3)
-      )
-    }
-
     lastCounter = SDL_GetPerformanceCounter()
 
     return .running
@@ -79,22 +71,10 @@ class Application {
   }
 
   private func paint(_ deltaTime: Float) -> ApplicationExecutionState {
-    balls.update(deltaTime)
-
     SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255)
     SDL_RenderClear(renderer)
 
     SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255)
-    for ball in balls.balls {
-      let position = ball.position().pointee, size = ball.size()
-      var rect = SDL_FRect(
-        x: position.x - size,
-        y: position.y - size,
-        w: size * 2.0,
-        h: size * 2.0
-      )
-      SDL_RenderFillRect(renderer, &rect)
-    }
 
     SDL_RenderPresent(renderer)
     return .running
diff --git a/Sources/SwiftFrontend/CMakeLists.txt b/Sources/SwiftFrontend/CMakeLists.txt
index 0924a14..abe9f17 100644
--- a/Sources/SwiftFrontend/CMakeLists.txt
+++ b/Sources/SwiftFrontend/CMakeLists.txt
@@ -1,5 +1,5 @@
 add_executable(SwiftFrontend MACOSX_BUNDLE main.swift Application.swift)
-target_link_libraries(SwiftFrontend PRIVATE CppBackend SDLSwift)
+target_link_libraries(SwiftFrontend PRIVATE SwiftBackend SDLSwift)
 set_target_properties(SwiftFrontend PROPERTIES
   XCODE_ATTRIBUTE_ENABLE_HARDENED_RUNTIME NO
   XCODE_EMBED_FRAMEWORKS "${SDL3}"