diff --git a/CMakeLists.txt b/CMakeLists.txt
index d3614e6..7f0f857 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,5 @@
 cmake_minimum_required(VERSION 3.7)
 
-
 option(VERSION_STRING "Project version string" "0.0.0")
 
 project(antkeeper VERSION ${VERSION_STRING} LANGUAGES CXX)
diff --git a/src/game/context.hpp b/src/game/context.hpp
index 40634d7..a9bd9cc 100644
--- a/src/game/context.hpp
+++ b/src/game/context.hpp
@@ -222,6 +222,16 @@ struct context
 	std::vector<scene::text*> language_menu_texts;
 	std::vector<std::function<void()>> language_menu_callbacks;
 	int language_menu_index;
+	scene::text* sound_menu_master_volume_label_text;
+	scene::text* sound_menu_master_volume_value_text;
+	scene::text* sound_menu_ambience_volume_label_text;
+	scene::text* sound_menu_ambience_volume_value_text;
+	scene::text* sound_menu_effects_volume_label_text;
+	scene::text* sound_menu_effects_volume_value_text;
+	scene::text* sound_menu_back_label_text;
+	std::vector<scene::text*> sound_menu_label_texts;
+	std::vector<scene::text*> sound_menu_value_texts;
+	int sound_menu_index;
 	
 	// Surface scene
 	scene::collection* surface_scene;
@@ -261,6 +271,11 @@ struct context
 	std::unordered_map<std::string, input::control*> controls;
 	bool mouse_look;
 	
+	// Sound
+	float master_volume;
+	float ambience_volume;
+	float effects_volume;
+	
 	// Parallel processes
 	std::unordered_map<std::string, std::function<void(double, double)>> processes;
 
diff --git a/src/game/states/boot.cpp b/src/game/states/boot.cpp
index 9cb3dc2..cbc0e9d 100644
--- a/src/game/states/boot.cpp
+++ b/src/game/states/boot.cpp
@@ -106,6 +106,7 @@ static void load_config(game::context* ctx);
 static void load_strings(game::context* ctx);
 static void setup_window(game::context* ctx);
 static void setup_rendering(game::context* ctx);
+static void setup_sound(game::context* ctx);
 static void setup_scenes(game::context* ctx);
 static void setup_animation(game::context* ctx);
 static void setup_entities(game::context* ctx);
@@ -133,6 +134,7 @@ void enter(application* app, int argc, char** argv)
 		load_strings(ctx);
 		setup_window(ctx);
 		setup_rendering(ctx);
+		setup_sound(ctx);
 		setup_scenes(ctx);
 		setup_animation(ctx);
 		setup_entities(ctx);
@@ -651,6 +653,29 @@ void setup_rendering(game::context* ctx)
 	logger->pop_task(EXIT_SUCCESS);
 }
 
+void setup_sound(game::context* ctx)
+{
+	debug::logger* logger = ctx->logger;
+	logger->push_task("Setting up sound");
+	
+	// Load master volume
+	ctx->master_volume = 1.0f;
+	if (ctx->config->contains("master_volume"))
+		ctx->master_volume = (*ctx->config)["master_volume"].get<float>();
+	
+	// Load ambience volume
+	ctx->ambience_volume = 1.0f;
+	if (ctx->config->contains("ambience_volume"))
+		ctx->ambience_volume = (*ctx->config)["ambience_volume"].get<float>();
+	
+	// Load effects volume
+	ctx->effects_volume = 1.0f;
+	if (ctx->config->contains("effects_volume"))
+		ctx->effects_volume = (*ctx->config)["effects_volume"].get<float>();
+	
+	logger->pop_task(EXIT_SUCCESS);
+}
+
 void setup_scenes(game::context* ctx)
 {
 	debug::logger* logger = ctx->logger;
diff --git a/src/game/states/language-menu.cpp b/src/game/states/language-menu.cpp
index 7129b29..a26d990 100644
--- a/src/game/states/language-menu.cpp
+++ b/src/game/states/language-menu.cpp
@@ -24,7 +24,6 @@
 #include "render/passes/clear-pass.hpp"
 #include "debug/logger.hpp"
 #include "game/fonts.hpp"
-#include "game/save.hpp"
 
 namespace game {
 namespace state {
@@ -275,9 +274,6 @@ 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);
 }
 
diff --git a/src/game/states/options-menu.cpp b/src/game/states/options-menu.cpp
index f47f8da..bd9e909 100644
--- a/src/game/states/options-menu.cpp
+++ b/src/game/states/options-menu.cpp
@@ -19,7 +19,9 @@
 
 #include "game/states/options-menu.hpp"
 #include "game/states/main-menu.hpp"
+#include "game/states/sound-menu.hpp"
 #include "game/states/language-menu.hpp"
+#include "game/save.hpp"
 #include "animation/ease.hpp"
 #include "animation/animation.hpp"
 #include "animation/animator.hpp"
@@ -54,12 +56,24 @@ void enter(game::context* ctx)
 	// Construct options menu callbacks
 	auto menu_back_callback = [ctx]()
 	{
+		// Save config
+		game::save_config(ctx);
+		
+		// Return to main menu
 		application::state next_state;
 		next_state.name = "main_menu";
 		next_state.enter = std::bind(game::state::main_menu::enter, ctx, 1);
 		next_state.exit = std::bind(game::state::main_menu::exit, ctx);
 		ctx->app->change_state(next_state);
 	};
+	auto change_state_sound_menu = [ctx]()
+	{
+		application::state next_state;
+		next_state.name = "sound_menu";
+		next_state.enter = std::bind(game::state::sound_menu::enter, ctx);
+		next_state.exit = std::bind(game::state::sound_menu::exit, ctx);
+		ctx->app->change_state(next_state);
+	};
 	auto change_state_language_menu = [ctx]()
 	{
 		application::state next_state;
@@ -72,7 +86,7 @@ void enter(game::context* ctx)
 	// Build list of options menu callbacks
 	ctx->options_menu_callbacks.push_back(nullptr);
 	ctx->options_menu_callbacks.push_back(nullptr);
-	ctx->options_menu_callbacks.push_back(nullptr);
+	ctx->options_menu_callbacks.push_back(change_state_sound_menu);
 	ctx->options_menu_callbacks.push_back(change_state_language_menu);
 	ctx->options_menu_callbacks.push_back(menu_back_callback);
 	
diff --git a/src/game/states/sound-menu.cpp b/src/game/states/sound-menu.cpp
new file mode 100644
index 0000000..4543ec6
--- /dev/null
+++ b/src/game/states/sound-menu.cpp
@@ -0,0 +1,324 @@
+/*
+ * Copyright (C) 2021  Christopher J. Howard
+ *
+ * This file is part of Antkeeper source code.
+ *
+ * Antkeeper source code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Antkeeper source code is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "game/states/sound-menu.hpp"
+#include "game/states/options-menu.hpp"
+#include "application.hpp"
+#include "scene/text.hpp"
+#include "render/passes/clear-pass.hpp"
+#include "debug/logger.hpp"
+
+namespace game {
+namespace state {
+namespace sound_menu {
+
+static void update_text_color(game::context* ctx)
+{
+	float4 inactive_color = {1.0f, 1.0f, 1.0f, 0.5f};
+	float4 active_color = {1.0f, 1.0f, 1.0f, 1.0f};
+	
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+
+		if (i == ctx->sound_menu_index)
+		{
+			label_text->set_color(active_color);
+			if (value_text)
+				value_text->set_color(active_color);
+		}
+		else
+		{
+			label_text->set_color(inactive_color);
+			if (value_text)
+				value_text->set_color(inactive_color);
+		}
+	}
+}
+
+
+static void update_text_tweens(game::context* ctx)
+{
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+		
+		label_text->update_tweens();
+		if (value_text)
+			value_text->update_tweens();
+	}
+}
+
+void enter(game::context* ctx)
+{
+	ctx->ui_clear_pass->set_cleared_buffers(true, true, false);
+	
+	ctx->sound_menu_index = 0;
+	
+	// Construct sound menu texts
+	ctx->sound_menu_master_volume_label_text = new scene::text();
+	ctx->sound_menu_master_volume_value_text = new scene::text();
+	ctx->sound_menu_ambience_volume_label_text = new scene::text();
+	ctx->sound_menu_ambience_volume_value_text = new scene::text();
+	ctx->sound_menu_effects_volume_label_text = new scene::text();
+	ctx->sound_menu_effects_volume_value_text = new scene::text();
+	ctx->sound_menu_back_label_text = new scene::text();
+	
+	// Set text content
+	ctx->sound_menu_master_volume_label_text->set_content((*ctx->strings)["sound_menu_master_volume"]);
+	ctx->sound_menu_master_volume_value_text->set_content(std::to_string(static_cast<int>(ctx->master_volume * 100.0f + 0.5f)));
+	ctx->sound_menu_ambience_volume_label_text->set_content((*ctx->strings)["sound_menu_ambience_volume"]);
+	ctx->sound_menu_ambience_volume_value_text->set_content(std::to_string(static_cast<int>(ctx->ambience_volume * 100.0f + 0.5f)));
+	ctx->sound_menu_effects_volume_label_text->set_content((*ctx->strings)["sound_menu_effects_volume"]);
+	ctx->sound_menu_effects_volume_value_text->set_content(std::to_string(static_cast<int>(ctx->effects_volume * 100.0f + 0.5f)));
+	ctx->sound_menu_back_label_text->set_content((*ctx->strings)["back"]);
+	
+	// Build lists of sound menu texts
+	ctx->sound_menu_label_texts.push_back(ctx->sound_menu_master_volume_label_text);
+	ctx->sound_menu_label_texts.push_back(ctx->sound_menu_ambience_volume_label_text);
+	ctx->sound_menu_label_texts.push_back(ctx->sound_menu_effects_volume_label_text);
+	ctx->sound_menu_label_texts.push_back(ctx->sound_menu_back_label_text);
+	ctx->sound_menu_value_texts.push_back(ctx->sound_menu_master_volume_value_text);
+	ctx->sound_menu_value_texts.push_back(ctx->sound_menu_ambience_volume_value_text);
+	ctx->sound_menu_value_texts.push_back(ctx->sound_menu_effects_volume_value_text);
+	ctx->sound_menu_value_texts.push_back(nullptr);
+	
+	// Set text fonts
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		label_text->set_material(&ctx->menu_font_material);
+		label_text->set_font(&ctx->menu_font);
+		
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+		if (value_text)
+		{
+			value_text->set_material(&ctx->menu_font_material);
+			value_text->set_font(&ctx->menu_font);
+		}
+	}
+	
+	// Calculate menu width
+	float menu_width = 0.0f;
+	float menu_spacing = ctx->menu_font.get_glyph_metrics(U'M').width;
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+		
+		float row_width = 0.0f;
+		
+		// Add label width to width
+		const auto& label_bounds = static_cast<const geom::aabb<float>&>(label_text->get_local_bounds());
+		row_width += label_bounds.max_point.x - label_bounds.min_point.x;
+		
+		if (value_text != nullptr)
+		{
+			// Add value width to width
+			//const auto& value_bounds = static_cast<const geom::aabb<float>&>(value_text->get_local_bounds());
+			//row_width += value_bounds.max_point.x - value_bounds.min_point.x;
+			
+			// Add spacing to row width
+			row_width += menu_spacing * 4.0f;
+		}
+		
+		menu_width = std::max<float>(menu_width, row_width);
+	}
+	
+	// Align texts
+	float menu_height = ctx->sound_menu_label_texts.size() * ctx->menu_font.get_font_metrics().linespace;
+	float menu_x = -menu_width * 0.5f;
+	float menu_y = menu_height * 0.5f - ctx->menu_font.get_font_metrics().linespace;
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		
+		float x = menu_x;
+		float y = menu_y - ctx->menu_font.get_font_metrics().linespace * i;
+		label_text->set_translation({std::round(x), std::round(y), 0.0f});
+		
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+		if (value_text)
+		{
+			const auto& value_bounds = static_cast<const geom::aabb<float>&>(value_text->get_local_bounds());
+			const float value_width =  value_bounds.max_point.x - value_bounds.min_point.x;
+			x = menu_x + menu_width - value_width;
+			
+			value_text->set_translation({std::round(x), std::round(y), 0.0f});
+		}
+	}
+	
+	// Construct sound menu callbacks
+	auto menu_back_callback = [ctx]()
+	{
+		application::state next_state;
+		next_state.name = "options_menu";
+		next_state.enter = std::bind(game::state::options_menu::enter, ctx);
+		next_state.exit = std::bind(game::state::options_menu::exit, ctx);
+		ctx->app->change_state(next_state);
+	};
+	auto increase_volume_callback = [ctx, menu_x, menu_width]()
+	{
+		if (ctx->sound_menu_index > 2)
+			return;
+		
+		// Find volume variable
+		float* volumes[] =
+		{
+			&ctx->master_volume,
+			&ctx->ambience_volume,
+			&ctx->effects_volume
+		};
+		float* volume = volumes[ctx->sound_menu_index];
+		
+		// Increase volume
+		*volume += 0.1f;
+		if (*volume > 1.0f)
+			*volume = 1.0f;
+		
+		// Update volume value text
+		scene::text* value_text = ctx->sound_menu_value_texts[ctx->sound_menu_index];
+		value_text->set_content(std::to_string(static_cast<int>((*volume) * 100.0f + 0.5f)));
+		
+		// Realign value text
+		const auto& value_bounds = static_cast<const geom::aabb<float>&>(value_text->get_local_bounds());
+		const float value_width =  value_bounds.max_point.x - value_bounds.min_point.x;
+		const float3& translation = value_text->get_translation();
+		value_text->set_translation(float3{std::round(menu_x + menu_width - value_width), translation.y, translation.z});
+		value_text->update_tweens();
+	};
+	auto decrease_volume_callback = [ctx, menu_x, menu_width]()
+	{
+		if (ctx->sound_menu_index > 2)
+			return;
+		
+		// Find volume variable
+		float* volumes[] =
+		{
+			&ctx->master_volume,
+			&ctx->ambience_volume,
+			&ctx->effects_volume
+		};
+		float* volume = volumes[ctx->sound_menu_index];
+		
+		// Decrease volume
+		*volume -= 0.1f;
+		if (*volume < 0.0f)
+			*volume = 0.0f;
+		
+		// Update volume value text
+		scene::text* value_text = ctx->sound_menu_value_texts[ctx->sound_menu_index];
+		value_text->set_content(std::to_string(static_cast<int>((*volume) * 100.0f + 0.5f)));
+		
+		// Realign value text
+		const auto& value_bounds = static_cast<const geom::aabb<float>&>(value_text->get_local_bounds());
+		const float value_width =  value_bounds.max_point.x - value_bounds.min_point.x;
+		const float3& translation = value_text->get_translation();
+		value_text->set_translation(float3{std::round(menu_x + menu_width - value_width), translation.y, translation.z});
+		value_text->update_tweens();
+	};
+	
+	ctx->controls["menu_down"]->set_activated_callback
+	(
+		[ctx]()
+		{
+			++ctx->sound_menu_index;
+			if (ctx->sound_menu_index >= ctx->sound_menu_label_texts.size())
+				ctx->sound_menu_index = 0;
+			
+			update_text_color(ctx);
+		}
+	);
+	ctx->controls["menu_up"]->set_activated_callback
+	(
+		[ctx]()
+		{
+			--ctx->sound_menu_index;
+			if (ctx->sound_menu_index < 0)
+				ctx->sound_menu_index = ctx->sound_menu_label_texts.size() - 1;
+			
+			update_text_color(ctx);
+		}
+	);
+	ctx->controls["menu_left"]->set_activated_callback(decrease_volume_callback);
+	ctx->controls["menu_right"]->set_activated_callback(increase_volume_callback);
+	ctx->controls["menu_select"]->set_activated_callback
+	(
+		[ctx, menu_back_callback]()
+		{
+			if (ctx->sound_menu_index == 3)
+				menu_back_callback();
+		}
+	);
+	ctx->controls["menu_back"]->set_activated_callback(menu_back_callback);
+	
+	// Add text objects to UI
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+		
+		ctx->ui_scene->add_object(label_text);
+		if (value_text)
+			ctx->ui_scene->add_object(value_text);
+	}
+	update_text_color(ctx);
+	update_text_tweens(ctx);
+}
+
+void exit(game::context* ctx)
+{
+	// Clear control callbacks
+	ctx->controls["menu_down"]->set_activated_callback(nullptr);
+	ctx->controls["menu_up"]->set_activated_callback(nullptr);
+	ctx->controls["menu_left"]->set_activated_callback(nullptr);
+	ctx->controls["menu_right"]->set_activated_callback(nullptr);
+	ctx->controls["menu_select"]->set_activated_callback(nullptr);
+	ctx->controls["menu_back"]->set_activated_callback(nullptr);
+	
+	// Destruct sound menu texts
+	for (std::size_t i = 0; i < ctx->sound_menu_label_texts.size(); ++i)
+	{
+		scene::text* label_text = ctx->sound_menu_label_texts[i];
+		ctx->ui_scene->remove_object(label_text);
+		delete label_text;
+		
+		scene::text* value_text = ctx->sound_menu_value_texts[i];
+		if (value_text)
+		{
+			ctx->ui_scene->remove_object(value_text);
+			delete value_text;
+		}
+	}
+	ctx->sound_menu_label_texts.clear();
+	ctx->sound_menu_value_texts.clear();
+	
+	// Update volumes in config
+	(*ctx->config)["master_volume"] = ctx->master_volume;
+	(*ctx->config)["ambience_volume"] = ctx->ambience_volume;
+	(*ctx->config)["effects_volume"] = ctx->effects_volume;
+	
+	ctx->ui_clear_pass->set_cleared_buffers(false, true, false);
+}
+
+} // namespace sound_menu
+} // namespace state
+} // namespace game
diff --git a/src/game/states/sound-menu.hpp b/src/game/states/sound-menu.hpp
new file mode 100644
index 0000000..d2d55e6
--- /dev/null
+++ b/src/game/states/sound-menu.hpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021  Christopher J. Howard
+ *
+ * This file is part of Antkeeper source code.
+ *
+ * Antkeeper source code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Antkeeper source code is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef ANTKEEPER_GAME_STATE_SOUND_MENU_HPP
+#define ANTKEEPER_GAME_STATE_SOUND_MENU_HPP
+
+#include "game/context.hpp"
+
+namespace game {
+namespace state {
+
+/// Sound menu screen game state functions.
+namespace sound_menu {
+
+void enter(game::context* ctx);
+void exit(game::context* ctx);
+
+} // namespace sound_menu
+
+} // namespace state
+} // namespace game
+
+#endif // ANTKEEPER_GAME_STATE_SOUND_MENU_HPP