diff --git a/src/game/save.cpp b/src/game/save.cpp
index 269a282..6501c1c 100644
--- a/src/game/save.cpp
+++ b/src/game/save.cpp
@@ -19,12 +19,25 @@
 
 #include "game/save.hpp"
 #include "application.hpp"
+#include "debug/logger.hpp"
+#include <fstream>
 
 namespace game {
 
-bool save(game::context* ctx)
+void save_config(game::context* ctx)
 {
-	return false;
+	const std::string config_file_path = ctx->config_path + "config.json";
+	ctx->logger->push_task("Saving config to \"" + config_file_path + "\"");
+	try
+	{
+		std::ofstream config_file(config_file_path);
+		config_file << *(ctx->config);
+	}
+	catch (...)
+	{
+		ctx->logger->pop_task(EXIT_FAILURE);
+	}
+	ctx->logger->pop_task(EXIT_SUCCESS);
 }
 
 } // namespace game
diff --git a/src/game/save.hpp b/src/game/save.hpp
index bc7f227..d67b430 100644
--- a/src/game/save.hpp
+++ b/src/game/save.hpp
@@ -24,7 +24,7 @@
 
 namespace game {
 
-bool save(game::context* ctx);
+void save_config(game::context* ctx);
 
 } // namespace game
 
diff --git a/src/game/states/language-menu.cpp b/src/game/states/language-menu.cpp
index 7563fb8..7129b29 100644
--- a/src/game/states/language-menu.cpp
+++ b/src/game/states/language-menu.cpp
@@ -24,6 +24,7 @@
 #include "render/passes/clear-pass.hpp"
 #include "debug/logger.hpp"
 #include "game/fonts.hpp"
+#include "game/save.hpp"
 
 namespace game {
 namespace state {
@@ -181,6 +182,9 @@ void enter(game::context* ctx)
 		ctx->language_code = (*ctx->string_table)[0][ctx->language_index + 2];
 		ctx->strings = &ctx->string_table_map[ctx->language_code];
 		
+		// Update language in config
+		(*ctx->config)["language"] = ctx->language_code;
+		
 		ctx->logger->log("Language changed to \"" + ctx->language_code + "\"");
 		
 		// Reload fonts
@@ -271,6 +275,9 @@ void exit(game::context* ctx)
 	}
 	ctx->language_menu_texts.clear();
 	
+	// Save config
+	game::save_config(ctx);
+	
 	ctx->ui_clear_pass->set_cleared_buffers(false, true, false);
 }