diff --git a/src/main.c b/src/main.c
index 9dfb5dc..c1cf0e5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -509,16 +509,21 @@ resetGame(void)
 static bool
 init(void)
 {
+#ifdef STEAM_BUILD
+	if (!steam_restart_needed()) {
+		steam_init();
+	} else {
+		error("%s needs to be started through Steam", GAME_TITLE);
+		return false;
+	}
+#endif // STEAM_BUILD
+
 	if (!initSDL()) {
 		return false;
 	} else if (!initGame()) {
 		return false;
 	}
 
-#ifdef STEAM_BUILD
-	steam_init();
-#endif // STEAM_BUILD
-
 	settings_init();
 	hiscore_init();
 	initMainMenu();
diff --git a/src/steam/steamworks_api_wrapper.c b/src/steam/steamworks_api_wrapper.c
index 05f1a51..8c6844c 100644
--- a/src/steam/steamworks_api_wrapper.c
+++ b/src/steam/steamworks_api_wrapper.c
@@ -58,6 +58,12 @@ leaderboard_received(Sint64 hLeaderboard, const char *name)
 		m_hKillsLeaderboard = hLeaderboard;
 }
 
+bool
+steam_restart_needed()
+{
+	return c_SteamAPI_RestartAppIfNecessary();
+}
+
 void
 steam_init()
 {
diff --git a/src/steam/steamworks_api_wrapper.h b/src/steam/steamworks_api_wrapper.h
index fcd8d75..58fc507 100644
--- a/src/steam/steamworks_api_wrapper.h
+++ b/src/steam/steamworks_api_wrapper.h
@@ -25,6 +25,8 @@ typedef struct Achievement {
 	int m_iIconImage;
 } Achievement;
 
+bool steam_restart_needed(void);
+
 void steam_init(void);
 
 void steam_shutdown(void);
diff --git a/steamworks_c_wrapper/src/steamworks_c_wrapper.cpp b/steamworks_c_wrapper/src/steamworks_c_wrapper.cpp
index e8acf1c..bf9d6d5 100644
--- a/steamworks_c_wrapper/src/steamworks_c_wrapper.cpp
+++ b/steamworks_c_wrapper/src/steamworks_c_wrapper.cpp
@@ -47,6 +47,11 @@ c_SteamAPI_GetAppID()
 	return m_AppId;
 }
 
+bool c_SteamAPI_RestartAppIfNecessary()
+{
+	return SteamAPI_RestartAppIfNecessary(931040);
+}
+
 void
 c_SteamAPI_RunCallbacks(void)
 {
diff --git a/steamworks_c_wrapper/src/steamworks_c_wrapper.h b/steamworks_c_wrapper/src/steamworks_c_wrapper.h
index acebea2..a493a0a 100644
--- a/steamworks_c_wrapper/src/steamworks_c_wrapper.h
+++ b/steamworks_c_wrapper/src/steamworks_c_wrapper.h
@@ -26,6 +26,9 @@ c_SteamAPI_Init(void);
 int64_t
 c_SteamAPI_GetAppID(void);
 
+bool
+c_SteamAPI_RestartAppIfNecessary(void);
+
 void
 c_SteamAPI_RunCallbacks(void);