diff --git a/.gitignore b/.gitignore
index c082246..787484e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,5 @@ include/bindings/ruby_compiled.h
 p.vim
 
 .cache/
+
+result
diff --git a/Makefile b/Makefile
index 5f62418..80ad84e 100644
--- a/Makefile
+++ b/Makefile
@@ -4,15 +4,14 @@ OBJ_DIR := build
 INCLUDE_DIR := include
 SCRIPT_DIR := scripts
 
-TARGET_DEBUG := $(BIN_DIR)/game-dbg
-TARGET_RELEASE := $(BIN_DIR)/game
+TARGET_DEBUG := $(BIN_DIR)/misth-dbg
+TARGET_RELEASE := $(BIN_DIR)/misth
 
 PCH_DEBUG := $(OBJ_DIR)/debug/pch.h.gch
 PCH_RELEASE := $(OBJ_DIR)/release/pch.h.gch
 
-CCACHE := ccache
-CXX := $(CCACHE) $(shell which clang++)
-CC := $(CCACHE) $(shell which clang)
+CC ?= gcc
+CXX ?= g++
 
 # ---------------- SDL3 ----------------
 
@@ -36,7 +35,6 @@ CFLAGS_DEBUG := \
 
 CFLAGS_RELEASE := \
 	-std=c++20 -O3 -mtune=generic \
-	-flto=thin \
 	-fno-rtti -fomit-frame-pointer -DNDEBUG -s \
 	-Wno-unused-command-line-argument \
 	-I./include -I./libs/mruby/build/host/include \
@@ -59,7 +57,7 @@ DEP_RELEASE := $(OBJ_RELEASE:.o=.d)
 
 .PHONY: all debug release clean scripts
 
-all: debug
+all: release
 
 debug: scripts $(TARGET_DEBUG)
 
@@ -68,7 +66,7 @@ release: scripts $(TARGET_RELEASE)
 # ---------------- MRB_MGEMS ----------------
 
 scripts:
-	$(SCRIPT_DIR)/compile.sh
+	bash $(SCRIPT_DIR)/compile.sh
 
 # ---------------- PCH ----------------
 
@@ -115,5 +113,5 @@ $(OBJ_DIR)/release/%.o: $(SRC_DIR)/%.cc $(PCH_RELEASE)
 
 clean:
 	@rm -rf $(OBJ_DIR) $(BIN_DIR)
-	$(SCRIPT_DIR)/compile.sh clean
+	bash $(SCRIPT_DIR)/compile.sh clean
 	@echo "Cleaned build artifacts."
diff --git a/flake.nix b/flake.nix
index 796a2da..39fe9f9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,5 +1,5 @@
 {
-  description = "game engine";
+  description = "Project Misth";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
@@ -10,15 +10,13 @@
     { nixpkgs, ... }:
     let
       system = "x86_64-linux";
-
       pkgs = nixpkgs.legacyPackages.${system};
-      staticPkgs = pkgs.pkgsStatic;
 
-      mruby = staticPkgs.stdenv.mkDerivation {
+      mruby = pkgs.stdenv.mkDerivation {
         pname = "mruby";
         version = "0.0.1";
 
-        src = staticPkgs.lib.cleanSourceWith {
+        src = pkgs.lib.cleanSourceWith {
           src = ./libs;
           name = "mruby-src";
         };
@@ -30,7 +28,6 @@
         nativeBuildInputs = with pkgs; [
           ruby
           gnumake
-          clang
         ];
 
         buildPhase = ''
@@ -49,25 +46,24 @@
         '';
       };
 
-      game-engine = staticPkgs.stdenv.mkDerivation {
-        pname = "game-engine";
+      misth = pkgs.stdenv.mkDerivation {
+        pname = "misth";
         version = "0.1.0";
 
         src = ./.;
 
         nativeBuildInputs = with pkgs; [
-          clang
           pkg-config
           gnumake
           bear
-          ccache
           xxd
+          bash
         ];
 
-        buildInputs = [
-          pkgs.sdl3
-          pkgs.sdl3-ttf
-          pkgs.sdl3-image
+        buildInputs = with pkgs; [
+          sdl3
+          sdl3-ttf
+          sdl3-image
 
           mruby
         ];
@@ -81,43 +77,38 @@
 
         installPhase = ''
           mkdir -p $out/bin
-          cp game-engine $out/bin/game-engine
+          cp bin/misth $out/bin/misth
         '';
-
-        CC = "${pkgs.clang}/bin/clang";
-        CXX = "${pkgs.clang}/bin/clang++";
       };
 
     in
     {
       packages.${system} = {
-        default = game-engine;
-        game-engine = game-engine;
+        default = misth;
+        misth = misth;
         mruby = mruby;
       };
 
       devShells.${system}.default = pkgs.mkShell {
-        inputsFrom = [ game-engine ];
+        inputsFrom = [ misth ];
 
-        packages = [
-          pkgs.clang-tools
-          pkgs.clang
-          pkgs.ccache
-          pkgs.pkg-config
-          pkgs.gnumake
-          pkgs.bear
-          pkgs.ruby
-          pkgs.xxd
+        packages = with pkgs; [
+          clang-tools
+          pkg-config
+          ccache
+          gnumake
+          bear
+          ruby
+          xxd
 
-          pkgs.sdl3
-          pkgs.sdl3-ttf
-          pkgs.sdl3-image
+          sdl3
+          sdl3-ttf
+          sdl3-image
         ];
 
         shellHook = ''
-          export CC=clang
-          export CXX=clang++
-          export LD=clang
+          export CC="ccache gcc"
+          export CXX="ccache g++"
 
           export MRBC=${mruby}/bin/mrbc
           export MRUBY_INCLUDE=${mruby}/include