diff --git a/.gitmodules b/.gitmodules
index 15d4e3e..e1f447a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,16 +1,16 @@
-[submodule "lib/SDL"]
-	path = lib/SDL
+[submodule "SDL"]
+	path = extern/SDL
 	url = https://github.com/libsdl-org/SDL.git
 	branch = release-2.28.x
-[submodule "lib/SDL_image"]
-	path = lib/SDL_image
+[submodule "SDL_image"]
+	path = extern/SDL_image
 	url = https://github.com/libsdl-org/SDL_image.git
 	branch = release-2.8.x
-[submodule "lib/libpng"]
-	path = lib/libpng
+[submodule "libpng"]
+	path = extern/libpng
 	url = https://github.com/glennrp/libpng.git
 	branch = libpng16
-[submodule "lib/zlib"]
-	path = lib/zlib
+[submodule "zlib"]
+	path = extern/zlib
 	url = https://github.com/madler/zlib.git
 	branch = master
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8865b00..0f04a2c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,14 +5,14 @@ project(SDL_Minigame)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
-set(PROJECT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
-set(PROJECT_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
+set(PROJECT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+set(PROJECT_INCLUDE_DIR ${PROJECT_SOURCE_DIR}/include)
 set(PROJECT_BINARY_DIR ${CMAKE_CURRENT_BINARY_DIR})
 
-add_subdirectory(lib/SDL EXCLUDE_FROM_ALL)
-add_subdirectory(lib/SDL_image EXCLUDE_FROM_ALL)
-add_subdirectory(lib/zlib EXCLUDE_FROM_ALL)
-add_subdirectory(lib/libpng EXCLUDE_FROM_ALL)
+add_subdirectory(extern/SDL EXCLUDE_FROM_ALL)
+add_subdirectory(extern/SDL_image EXCLUDE_FROM_ALL)
+add_subdirectory(extern/zlib EXCLUDE_FROM_ALL)
+add_subdirectory(extern/libpng EXCLUDE_FROM_ALL)
 
 include_directories(
     ${PROJECT_INCLUDE_DIR}
@@ -21,7 +21,7 @@ include_directories(
     ${ZLIB_IMAGE_INCLUDE_DIRS}
     ${PNG_INCLUDE_DIRS})
 
-file(GLOB_RECURSE SOURCES src/*.cpp)
+file(GLOB_RECURSE SOURCES ${PROJECT_SOURCE_DIR}/src/*.cpp)
 add_executable(${PROJECT_NAME} ${SOURCES})
 
 target_link_libraries(${PROJECT_NAME} PRIVATE
diff --git a/README.md b/README.md
index af0abeb..7f98a6b 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@
 ```sh
 git submodule update --init # only needed once
 cmake -S . -B build
+cmake --build build
 ```
 For Windows systems using MinGW the flag `-G "MinGW Makefiles"` has to be specified
 
diff --git a/src/assets/Map.aseprite b/assets/Map.aseprite
similarity index 100%
rename from src/assets/Map.aseprite
rename to assets/Map.aseprite
diff --git a/src/assets/MapNew.aseprite b/assets/MapNew.aseprite
similarity index 100%
rename from src/assets/MapNew.aseprite
rename to assets/MapNew.aseprite
diff --git a/src/assets/cat.png b/assets/cat.png
similarity index 100%
rename from src/assets/cat.png
rename to assets/cat.png
diff --git a/src/assets/chicken_neutral.png b/assets/chicken_neutral.png
similarity index 100%
rename from src/assets/chicken_neutral.png
rename to assets/chicken_neutral.png
diff --git a/src/assets/chicken_neutral_knight.png b/assets/chicken_neutral_knight.png
similarity index 100%
rename from src/assets/chicken_neutral_knight.png
rename to assets/chicken_neutral_knight.png
diff --git a/src/assets/cow.png b/assets/cow.png
similarity index 100%
rename from src/assets/cow.png
rename to assets/cow.png
diff --git a/src/assets/dirt.png b/assets/dirt.png
similarity index 100%
rename from src/assets/dirt.png
rename to assets/dirt.png
diff --git a/src/assets/grass.png b/assets/grass.png
similarity index 100%
rename from src/assets/grass.png
rename to assets/grass.png
diff --git a/src/assets/stone.png b/assets/stone.png
similarity index 100%
rename from src/assets/stone.png
rename to assets/stone.png
diff --git a/src/assets/water.png b/assets/water.png
similarity index 100%
rename from src/assets/water.png
rename to assets/water.png
diff --git a/src/assets/water1.ase b/assets/water1.ase
similarity index 100%
rename from src/assets/water1.ase
rename to assets/water1.ase
diff --git a/src/assets/water1.png b/assets/water1.png
similarity index 100%
rename from src/assets/water1.png
rename to assets/water1.png
diff --git a/lib/SDL b/extern/SDL
similarity index 100%
rename from lib/SDL
rename to extern/SDL
diff --git a/lib/SDL_image b/extern/SDL_image
similarity index 100%
rename from lib/SDL_image
rename to extern/SDL_image
diff --git a/lib/libpng b/extern/libpng
similarity index 100%
rename from lib/libpng
rename to extern/libpng
diff --git a/lib/zlib b/extern/zlib
similarity index 100%
rename from lib/zlib
rename to extern/zlib