diff --git a/incl/yaze.h b/incl/yaze.h
index 3e27b235..97775412 100644
--- a/incl/yaze.h
+++ b/incl/yaze.h
@@ -27,6 +27,7 @@ typedef enum yaze_status {
   YAZE_ERROR = 1,
 } yaze_status;
 
+int yaze_app_main(int argc, char** argv);
 void yaze_check_version(const char* version);
 
 yaze_status yaze_init(yaze_editor_context*);
diff --git a/src/yaze.cc b/src/yaze.cc
index 27b3dcd2..8477e61e 100644
--- a/src/yaze.cc
+++ b/src/yaze.cc
@@ -1,6 +1,7 @@
 #include "yaze.h"
 
 #include <iostream>
+#include <memory>
 #include <sstream>
 
 #include "app/rom.h"
@@ -8,6 +9,32 @@
 #include "dungeon.h"
 #include "yaze_config.h"
 
+int yaze_app_main(int argc, char **argv) {
+  yaze::util::FlagParser parser(yaze::util::global_flag_registry());
+  RETURN_IF_EXCEPTION(parser.Parse(argc, argv));
+  std::string rom_filename = "";
+  if (!FLAGS_rom_file->Get().empty()) {
+    rom_filename = FLAGS_rom_file->Get();
+  }
+
+#ifdef __APPLE__
+  return yaze_run_cocoa_app_delegate(rom_filename.c_str());
+#endif
+
+  auto controller = std::make_unique<core::Controller>();
+  EXIT_IF_ERROR(controller->OnEntry(rom_filename))
+  while (controller->IsActive()) {
+    controller->OnInput();
+    if (auto status = controller->OnLoad(); !status.ok()) {
+      std::cerr << status.message() << std::endl;
+      break;
+    }
+    controller->DoRender();
+  }
+  controller->OnExit();
+  return EXIT_SUCCESS;
+}
+
 void yaze_check_version(const char *version) {
   std::string current_version;
   std::stringstream ss;