diff --git a/client/main.cc b/client/main.cc
index d76acb0..a37c4e6 100644
--- a/client/main.cc
+++ b/client/main.cc
@@ -18,7 +18,7 @@ int main(){
 	signal(SIGTERM, cleanup);
 #endif
 
-	wnd = new fishbone::Window("Fishbowl", 640, 480);
+	wnd = new fishbone::Window("Fishbowl", 800, 600);
 
 	while(!quit);
 }
diff --git a/engine/CMakeLists.txt b/engine/CMakeLists.txt
index 470f90f..90c2438 100644
--- a/engine/CMakeLists.txt
+++ b/engine/CMakeLists.txt
@@ -15,7 +15,6 @@ if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake/CPM.cmake")
 		message(FATAL_ERROR "Failed to download CPM.cmake: ${status}\n${log_content}")
 	endif()
 endif()
-include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/CPM.cmake")
 include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/util.cmake")
 
 file(GLOB_RECURSE SRCS src/**.cc src/**.c)
@@ -69,3 +68,6 @@ if(FISHBONE_BUILD_TESTS)
 	enable_testing()
 	add_subdirectory(tests)
 endif()
+
+# Tools
+add_subdirectory(tools)
diff --git a/engine/cmake/util.cmake b/engine/cmake/util.cmake
index ee4dd5c..8ac15f6 100644
--- a/engine/cmake/util.cmake
+++ b/engine/cmake/util.cmake
@@ -12,7 +12,12 @@ function(fb_add_dep TARGET_NAME DEP_NAME)
 		return()
 	endif()
 
-	include("${CMAKE_CURRENT_SOURCE_DIR}/cmake/deps/${DEP_NAME}.cmake")
+	set(TOP_CMAKE "${CMAKE_CURRENT_SOURCE_DIR}/")
+	while(NOT EXISTS "${TOP_CMAKE}")
+		set(TOP_CMAKE "${TOP_CMAKE}../")
+	endwhile()
+
+	include("${TOP_CMAKE}cmake/deps/${DEP_NAME}.cmake")
 
 	if(NOT TARGET deps::${DEP_NAME})
 		add_library(deps::${DEP_NAME} ALIAS ${DEP_NAME})
diff --git a/engine/src/file.cc b/engine/src/file.cc
index 72cf8bb..5620858 100644
--- a/engine/src/file.cc
+++ b/engine/src/file.cc
@@ -24,6 +24,8 @@ fishbone::File::File(std::string path, std::string type) {
 }
 
 fishbone::File::~File() {
+	this->ifs.close();
+	this->ofs.close();
 }
 
 size_t fishbone::File::read(void* buffer, size_t size) {
diff --git a/engine/src/window/sdl2.cc b/engine/src/window/sdl2.cc
index 373c5ba..b12b57e 100644
--- a/engine/src/window/sdl2.cc
+++ b/engine/src/window/sdl2.cc
@@ -18,6 +18,8 @@ fishbone::Window::Window(std::string title, int width, int height){
 	this->impl = new fishbone::Window::Impl();
 	this->impl->window = SDL_CreateWindow(title.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, SDL_WINDOW_OPENGL);
 	this->impl->ctx = SDL_GL_CreateContext(this->impl->window);
+
+	gload_init();
 }
 
 fishbone::Window::~Window(){
diff --git a/engine/tools/CMakeLists.txt b/engine/tools/CMakeLists.txt
new file mode 100644
index 0000000..997f83d
--- /dev/null
+++ b/engine/tools/CMakeLists.txt
@@ -0,0 +1,7 @@
+project(tools)
+
+include("${CMAKE_CURRENT_SOURCE_DIR}/../cmake/util.cmake")
+
+add_executable(packer packer.cc)
+
+fb_add_dep(packer lz4)
diff --git a/engine/tools/packer.cc b/engine/tools/packer.cc
new file mode 100644
index 0000000..9cf3421
--- /dev/null
+++ b/engine/tools/packer.cc
@@ -0,0 +1,129 @@
+#include <vector>
+#include <string>
+#include <fstream>
+#include <iostream>
+
+#include <cstring>
+#include <cstdio>
+
+#include <sys/stat.h>
+#include <dirent.h>
+
+#include <lz4.h>
+
+/* Resource file is in simple structure:
+ * 4 bytes: ID
+ * 2 bytes: Data size
+ * n bytes: Data
+ *
+ * All numbers are in native endian
+ */
+
+class Chunk;
+
+class Chunk {
+	void init(std::string name){
+		this->data = nullptr;
+		memset(this->id, 0, 4);
+		strcpy(this->id, name.c_str());
+	}
+
+public:
+	char id[4];
+	unsigned char* data;
+	unsigned int size;
+	Chunk* parent;
+	std::vector<Chunk*> subchunks;
+
+	Chunk(std::string name){
+		this->init(name);
+	}
+
+	Chunk(Chunk* parent, std::string name){
+		this->init(name);
+
+		this->parent = parent;
+		this->parent->subchunks.push_back(this);
+	}
+
+	~Chunk(){
+		if(this->data != nullptr) delete[] this->data;
+
+		for(int i = 0; i < this->subchunks.size(); i++){
+			delete this->subchunks[i];
+		}
+	}
+
+	unsigned int totalSize(){
+		unsigned int sz = 0;
+
+		for(int i = 0; i < this->subchunks.size(); i++){
+			sz = this->subchunks[i]->totalSize();
+		}
+
+		return 4 + 4 + this->size + sz;
+	}
+
+	void write(std::string out){
+		std::ofstream* ofs = new std::ofstream(out, std::ios::binary);
+
+		this->write(ofs);
+
+		ofs->close();
+	}
+
+	void write(std::ofstream* ofs){
+		int sz = this->totalSize() - 4 - 4;
+
+		ofs->write((char*)this->id, 4);
+		ofs->write((char*)&sz, 4);
+		for(int i = 0; i < this->subchunks.size(); i++){
+			this->subchunks[i]->write(ofs);
+		}
+	}
+};
+
+static void readDir(Chunk* parent, std::string dirname){
+	DIR* dir = opendir(dirname.c_str());
+	struct dirent* d;
+
+	if(dir != nullptr){
+		while((d = readdir(dir)) != nullptr){
+			struct stat s;
+			std::string dn(d->d_name);
+			std::string p = dirname + "/" + dn;
+			Chunk* c;
+			
+			if(dn == ".." || dn == ".") continue;
+
+			stat(p.c_str(), &s);
+
+			if(S_ISDIR(s.st_mode)){
+				c = new Chunk(parent, "DIRE");
+				readDir(c, p);
+			}else{
+				c = new Chunk(parent, "FILE");
+			}
+		}
+		closedir(dir);
+	}
+}
+
+int main(int argc, char** argv){
+	Chunk* root;
+	Chunk* rootdir;
+
+	if(argc < 3){
+		std::cerr << "Usage: " << argv[0] << " [output] [input...]" << std::endl;
+		return 1;
+	}
+	
+	root = new Chunk("FBPK");
+	rootdir = new Chunk(root, "DIRE");
+
+	for(int i = 2; i < argc; i++){
+		readDir(rootdir, argv[i]);
+	}
+
+	root->write(argv[1]);
+}