diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0588056..dfdbfd0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ set(SOURCES
 	src/fomod/group.c
 	src/fomod/xmlUtil.c
 	src/fomod/parser.c
+	src/gui/guiMain.c
 )
 
 # add the executable
@@ -30,8 +31,12 @@ find_package(PkgConfig REQUIRED)
 pkg_search_module(GLIB REQUIRED glib-2.0)
 pkg_search_module(AUDIT REQUIRED audit)
 pkg_search_module(LIBXML REQUIRED libxml-2.0)
+pkg_search_module(GTK REQUIRED gtk4)
 
-target_include_directories(ModManager PRIVATE ${GLIB_INCLUDE_DIRS} ${LIBXML_INCLUDE_DIRS} ${AUDIT_INCLUDE_DIRS})
+target_include_directories(ModManager PRIVATE ${GLIB_INCLUDE_DIRS})
+target_include_directories(ModManager PRIVATE ${LIBXML_INCLUDE_DIRS})
+target_include_directories(ModManager PRIVATE ${AUDIT_INCLUDE_DIRS})
+target_include_directories(ModManager PRIVATE ${GTK_INCLUDE_DIRS})
 
 add_compile_options(-fsanitize=address)
 add_link_options(-fsanitize=address)
@@ -39,5 +44,6 @@ add_link_options(-fsanitize=address)
 target_link_libraries(ModManager ${GLIB_LDFLAGS})
 target_link_libraries(ModManager ${LIBXML_LIBRARIES})
 target_link_libraries(ModManager ${AUDIT_LIBRARIES})
+target_link_libraries(ModManager ${GTK_LIBRARIES})
 
 install(TARGETS ModManager DESTINATION bin)
diff --git a/src/gui/guiMain.c b/src/gui/guiMain.c
new file mode 100644
index 0000000..8b9745d
--- /dev/null
+++ b/src/gui/guiMain.c
@@ -0,0 +1,46 @@
+#include "guiMain.h"
+
+#include <gtk/gtk.h>
+
+static void print_hello(GtkWidget *widget, gpointer data) {
+  g_print("Hello World\n");
+}
+
+static void activate(GtkApplication *app, gpointer user_data) {
+  GtkWidget *window;
+  GtkWidget *button;
+  GtkWidget *box;
+
+  window = gtk_application_window_new(app);
+  gtk_window_set_title(GTK_WINDOW(window), "Mod Manager");
+  gtk_window_set_default_size(GTK_WINDOW(window), 800, 600);
+
+  box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
+  gtk_widget_set_halign(box, GTK_ALIGN_CENTER);
+  gtk_widget_set_valign(box, GTK_ALIGN_CENTER);
+
+  gtk_window_set_child(GTK_WINDOW(window), box);
+
+  button = gtk_button_new_with_label("Hello World");
+
+  g_signal_connect(button, "clicked", G_CALLBACK(print_hello), NULL);
+  g_signal_connect_swapped(button, "clicked", G_CALLBACK(gtk_window_destroy), window);
+
+  gtk_box_append(GTK_BOX(box), button);
+
+  gtk_widget_show(window);
+}
+
+int guiMain(int argc, char **argv) {
+
+  GtkApplication *app;
+  int status;
+
+  app = gtk_application_new("fr.marcbarbier.modmanager",
+                            G_APPLICATION_DEFAULT_FLAGS);
+  g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
+  status = g_application_run(G_APPLICATION(app), 1, argv);
+  g_object_unref(app);
+
+  return status;
+}
\ No newline at end of file
diff --git a/src/gui/guiMain.h b/src/gui/guiMain.h
new file mode 100644
index 0000000..f1ff330
--- /dev/null
+++ b/src/gui/guiMain.h
@@ -0,0 +1,6 @@
+#ifndef __GUIMAIN_H__
+#define __GUIMAIN_H__
+
+int guiMain(int argc, char **argv);
+
+#endif
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 0ebe429..24521f1 100644
--- a/src/main.c
+++ b/src/main.c
@@ -18,6 +18,8 @@
 #include "fomod.h"
 #include "order.h"
 
+#include "gui/guiMain.h"
+
 GHashTable * gamePaths;
 
 bool isRoot() {
@@ -574,6 +576,12 @@ int main(int argc, char ** argv) {
 		else
 			returnValue = removeMod(argc, argv);
 
+	} else if(strcmp(argv[1], "--gui") == 0) {
+		if(isRoot())
+			returnValue = noRoot();
+		else
+			returnValue = guiMain(argc, argv);
+
 	} else {
 		usage();
 		returnValue = EXIT_FAILURE;