diff --git a/.gitignore b/.gitignore
index da93220..4834943 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 /node_modules/
 /public/build/
+/public/assets/
 
 .DS_Store
diff --git a/public/assets/images/buildings/buildings.png b/public/assets/images/buildings/buildings.png
index 02c8c2b..1953901 100644
Binary files a/public/assets/images/buildings/buildings.png and b/public/assets/images/buildings/buildings.png differ
diff --git a/src/App.svelte b/src/App.svelte
index b8599e1..cab2516 100644
--- a/src/App.svelte
+++ b/src/App.svelte
@@ -1,7 +1,7 @@
 <script>
-    import {initGame} from "./Game/Game";
+    import { initGame } from "./Game/Game";
     import TailwindCss from "./TailwindCss.svelte";
-    import { UIAssetsLoaderInfoPipe, UICameraInfo, UIGameProfilerPipe, UIGameTimePipe, UIMainPipe, UISelectionInfo } from './Game/UIPipes/UIPipes';
+    import { UIAssetsLoaderInfoPipe, UICameraInfo, UIGameProfilerPipe, UIGameSound, UIGameTimePipe, UIMainPipe, UISelectionInfo } from "./Game/UIPipes/UIPipes";
     import { UIGlobalPipe } from "./UI/GlobalNamespace/GlobalNamespace";
 
     initGame();
@@ -14,12 +14,12 @@
     let totalToDownloadAssets = -1;
     let assetsFinished = false;
 
-    UIMainPipe.subscribe((s)=>{
+    UIMainPipe.subscribe((s) => {
         amogusCount = s.amogusCount;
         loadingAssets = s.loadingAssets;
     });
 
-    UIAssetsLoaderInfoPipe.subscribe((s)=>{
+    UIAssetsLoaderInfoPipe.subscribe((s) => {
         totalToDownloadAssets = s.totalToDownload;
         downloadedAssets = s.downloaded;
         assetsFinished = s.finished;
@@ -27,27 +27,27 @@
 
     let frameLatency = 0;
     let profileMessages = [];
-    UIGameProfilerPipe.subscribe((s)=>{
+    UIGameProfilerPipe.subscribe((s) => {
         frameLatency = s.frameLatency;
         profileMessages = s.profileMessages;
     });
 
     let selectedTypes = [];
-    UISelectionInfo.subscribe((s)=>{
+    UISelectionInfo.subscribe((s) => {
         selectedTypes = s.types;
     });
 
     let cameraInfo = {
-        position: {x: 0, y: 0},
-        zoom: 1
+        position: { x: 0, y: 0 },
+        zoom: 1,
     };
-    UICameraInfo.subscribe((s)=>{
+    UICameraInfo.subscribe((s) => {
         cameraInfo.position = s.position;
         cameraInfo.zoom = s.zoom;
     });
     let UIStateComponent = null;
 
-    UIGlobalPipe.subscribe((s)=>{
+    UIGlobalPipe.subscribe((s) => {
         UIStateComponent = s.currentStateComponent;
     });
 
@@ -58,13 +58,22 @@
         days: 0,
         weeks: 0,
         months: 0,
-        years: 0
+        years: 0,
     };
 
-    UIGameTimePipe.subscribe((s)=>{
+    UIGameTimePipe.subscribe((s) => {
         inGameTime = s.gameTime;
     });
 
+    let masterSound = 1.0;
+    let ambientSound = 1.0;
+    let musicSound = 0.3;
+
+    UIGameSound.subscribe((s) => {
+        masterSound = s.master;
+        ambientSound = s.ambient;
+        musicSound = s.music;
+    });
 </script>
 
 <div id="game-ui" class="absolute inset-0 flex items-center justify-center text-white select-none tracking-widest font-pixel pointer-events-none">
@@ -80,8 +89,33 @@
                 {/each}
                 <h2 class="font-semibold mt-2">In Game Time</h2>
                 <div class="w-full flex gap-2">
-                    <p>{inGameTime.days?.toString().padStart(2, '0')}.{inGameTime.months?.toString().padStart(2, '0')} of {inGameTime.years} y.</p>
-                    <p>{inGameTime.hours?.toString().padStart(2, '0')}:{inGameTime.minutes?.toString().padStart(2, '0')}:{inGameTime.seconds?.toString().padStart(2, '0')}</p>
+                    <p>
+                        {inGameTime.days?.toString().padStart(2, "0") ?? ""}.{inGameTime.months?.toString().padStart(2, "0") ?? ""} of {inGameTime.years ?? ""} y.
+                    </p>
+                    <p>
+                        {inGameTime.hours?.toString().padStart(2, "0") ?? ""}:{inGameTime.minutes?.toString().padStart(2, "0") ?? ""}:{inGameTime.seconds
+                            ?.toString()
+                            .padStart(2, "0") ?? ""}
+                    </p>
+                </div>
+                <h2 class="font-semibold mt-2">Sound</h2>
+                <div class="flex gap-2 items-center pointer-events-auto">
+                    <p>Master:</p>
+                    <input type="range" min="0" max="100" value="100" on:input={(e)=>{UIGameSound.update((s)=>{
+                        s.master = Number(e.target.value) / 100;
+                    })}}/>
+                </div>
+                <div class="flex gap-2 items-center pointer-events-auto">
+                    <p>Music:</p>
+                    <input type="range" min="0" max="100" value="30" on:input={(e)=>{UIGameSound.update((s)=>{
+                        s.music = Number(e.target.value) / 100;
+                    })}}/>
+                </div>
+                <div class="flex gap-2 items-center pointer-events-auto">
+                    <p>Ambient:</p>
+                    <input type="range" min="0" max="100" value="100" on:input={(e)=>{UIGameSound.update((s)=>{
+                        s.ambient = Number(e.target.value) / 100;
+                    })}}/>
                 </div>
             </div>
         </div>
@@ -101,9 +135,9 @@
                 </svg>
             </div>
             <div class="flex justify-center items-center gap-1 text-2xl opacity-60">
-                <p>{downloadedAssets >= 0 ? downloadedAssets:"Calculating..."}</p>
+                <p>{downloadedAssets >= 0 ? downloadedAssets : "Calculating..."}</p>
                 <p>/</p>
-                <p>{totalToDownloadAssets >= 0 ? totalToDownloadAssets:"Calculating..."}</p>
+                <p>{totalToDownloadAssets >= 0 ? totalToDownloadAssets : "Calculating..."}</p>
             </div>
         </div>
     {/if}
@@ -114,11 +148,11 @@
 
 <div id="game-profiler" class="absolute inset-0 flex text-yellow-500 select-none pointer-events-none font-pixel tracking-widest">
     <div class="w-full h-full flex flex-col text-lg px-2">
-        <p class="bg-black bg-opacity-50">FPS: {(1000.0 / frameLatency).toFixed(2)} {frameLatency.toFixed(2)}ms </p>
+        <p class="bg-black bg-opacity-50">FPS: {(1000.0 / frameLatency).toFixed(2)} {frameLatency.toFixed(2)}ms</p>
         {#each profileMessages as msg}
             <p class="bg-black bg-opacity-50">{msg.text}</p>
         {/each}
     </div>
 </div>
 
-<TailwindCss />
\ No newline at end of file
+<TailwindCss />
diff --git a/src/Game/Game.js b/src/Game/Game.js
index 42f4c71..0389366 100644
--- a/src/Game/Game.js
+++ b/src/Game/Game.js
@@ -4,7 +4,7 @@ import { UICameraInfo, UIGameProfilerPipe, UIMainPipe, UIObtainedResourcesPipe,
 import { getSpriteFromAtlas } from "./Utils/Sprites.utils";
 import { profileFPS } from "./Profiler/Profiler";
 import { createKeyboardBinding, inputControllerTick } from "./InputController/InputController";
-import { BC_BUILDING_PLACEHOLDERS, BC_CAMERA, BC_SPRITES_SETTINGS, BC_VIEWPORT, BC_WORLD, PRNG, setBC_SELECTION, setBC_VIEWPORT, setBC_WORLD } from "./GlobalVariables/GlobalVariables";
+import { BC_APP, BC_BUILDING_PLACEHOLDERS, BC_CAMERA, BC_SPRITES_SETTINGS, BC_VIEWPORT, BC_WORLD, PRNG, setBC_APP, setBC_SELECTION, setBC_VIEWPORT, setBC_WORLD } from "./GlobalVariables/GlobalVariables";
 import { clampNumber, interpolate,  } from "./Utils/Math.utils";
 import { calculateViewportFromCamera, moveHorizontally, moveVertically, screenToWorldCoordinates } from "./Camera/Camera";
 
@@ -22,12 +22,12 @@ import {
 } from "./WorldGeneration/WorldGeneration";
 import { handleBuildingsIncome, incBuildingCount } from "./Buildings/Buildings";
 import { handleDayNightCycle } from "./World/DayNightCycle";
+import { ambientDay, ambientMusic, ambientNight, handleSounds } from "./Sound/Sound";
 
 export function generateWorld() {
-    setTimeout(()=>{
-        createFirstWorldChunks();
-        startGame();
-    }, 0);
+
+    createFirstWorldChunks();
+    startGame();
 }
 
 function setupGlobalInput() {
@@ -74,6 +74,20 @@ function setupInGameSelector() {
     ph.zIndex = 1;
     BC_BUILDING_PLACEHOLDERS.push(ph);
     BC_VIEWPORT.addChild(ph);
+    ph = getSpriteFromAtlas("assets/images/buildings/buildings.png", new PIXI.Rectangle(0, 32, 16, 16));
+    ph.scale.set(BC_SPRITES_SETTINGS.scale);
+    ph.alpha = 0.5;
+    ph.visible = false;
+    ph.zIndex = 1;
+    BC_BUILDING_PLACEHOLDERS.push(ph);
+    BC_VIEWPORT.addChild(ph);
+    ph = getSpriteFromAtlas("assets/images/buildings/buildings.png", new PIXI.Rectangle(16, 32, 16, 16));
+    ph.scale.set(BC_SPRITES_SETTINGS.scale);
+    ph.alpha = 0.5;
+    ph.visible = false;
+    ph.zIndex = 1;
+    BC_BUILDING_PLACEHOLDERS.push(ph);
+    BC_VIEWPORT.addChild(ph);
 
     UIMainPipe.subscribe((s)=>{
         for (const i of BC_BUILDING_PLACEHOLDERS) {
@@ -150,6 +164,12 @@ function setupInGameSelector() {
                         case 3:
                             ns = getSpriteFromAtlas("assets/images/buildings/buildings.png", new PIXI.Rectangle(16, 16, 16, 16));
                             break;
+                        case 4:
+                            ns = getSpriteFromAtlas("assets/images/buildings/buildings.png", new PIXI.Rectangle(0, 32, 16, 16));
+                            break;
+                        case 5:
+                            ns = getSpriteFromAtlas("assets/images/buildings/buildings.png", new PIXI.Rectangle(16, 32, 16, 16));
+                            break;
                     }
                     ns.scale.set(BC_SPRITES_SETTINGS.scale, BC_SPRITES_SETTINGS.scale);
                     let r = worldCoordinatesToChunkIndexesCoordinates(t.x, t.y);
@@ -198,12 +218,11 @@ function setupInGameSelector() {
     };
 }
 
-let currentTint = 0xffffff;
-
 export async function initGame() {
     const app = new PIXI.Application();
     await app.init({ resizeTo: window, antialias: false });
     document.body.appendChild(app.canvas);
+    setBC_APP(app);
 
     await loadGameAssets();
     UIMainPipe.update((s) => {
@@ -232,7 +251,6 @@ export async function initGame() {
     app.ticker.add(updateChunksVisibility);
     app.ticker.add(profileFPS);
     app.ticker.add(handleBuildingsIncome);
-    app.ticker.add(handleDayNightCycle);
 
     createKeyboardBinding("KeyW", "Hold", [moveVertically]);
     createKeyboardBinding("KeyS", "Hold", [moveVertically]);
@@ -243,4 +261,9 @@ export async function initGame() {
 function startGame() {
     setupGlobalInput();
     setupInGameSelector();
+    BC_APP.ticker.add(handleDayNightCycle);
+    BC_APP.ticker.add(handleSounds);
+    ambientDay.play();
+    ambientNight.play();
+    ambientMusic.play();
 }
diff --git a/src/Game/GlobalVariables/GlobalVariables.js b/src/Game/GlobalVariables/GlobalVariables.js
index c962bc5..8cb55ec 100644
--- a/src/Game/GlobalVariables/GlobalVariables.js
+++ b/src/Game/GlobalVariables/GlobalVariables.js
@@ -1,6 +1,11 @@
 import Alea from "alea";
-import * as PIXI from "../../pixi/pixi.mjs";
-import { getSpriteFromAtlas } from "../Utils/Sprites.utils";
+
+
+export let BC_APP;
+export function setBC_APP(app) {
+    BC_APP = app;
+};
+
 /**
  * {PIXI.Container}
  */
diff --git a/src/Game/Sound/Sound.js b/src/Game/Sound/Sound.js
new file mode 100644
index 0000000..4fd3459
--- /dev/null
+++ b/src/Game/Sound/Sound.js
@@ -0,0 +1,69 @@
+import { Howl } from "howler";
+import { getDayPhase } from "../World/DayNightCycle";
+import { clampNumber, mapRange } from "../Utils/Math.utils";
+import { NumberCue } from "../Utils/DataTypes.utils";
+import { UIGameSound } from "../UIPipes/UIPipes";
+
+export let globalSoundVolume = 1.0;
+export let musicSoundVolume = 0.3;
+export let ambientSoundVolume = 1.0;
+
+UIGameSound.subscribe((s)=>{
+    globalSoundVolume = s.master;
+    musicSoundVolume = s.music;
+    ambientSoundVolume = s.ambient;
+});
+
+export let ambientNight = new Howl({
+    src: ['assets/sound/night_ambient.mp3'],
+    loop: true,
+    volume: globalSoundVolume * ambientSoundVolume
+});
+
+export let ambientDay = new Howl({
+    src: ['assets/sound/day_ambient.mp3'],
+    loop: true,
+    volume: globalSoundVolume * ambientSoundVolume
+});
+
+export let ambientMusic = new Howl({
+    src: ['assets/sound/df_music/df_espagnole.mp3'],
+    loop: true,
+    volume: globalSoundVolume * musicSoundVolume
+});
+
+let dayAmbientSoundCue = new NumberCue(
+    [
+        0,
+        0,
+        1.0,
+        1.0,
+        0.8,
+        0.1,
+        0,
+    ],
+    [0.0, 0.15, 0.4, 0.75, 0.8, 0.9, 1.0],
+    "cos"
+);
+
+let nightAmbientSoundCue = new NumberCue(
+    [
+        1.0,
+        1.0,
+        0.0,
+        0.0,
+        0.2,
+        0.9,
+        1.0,
+    ],
+    [0.0, 0.15, 0.4, 0.75, 0.8, 0.9, 1.0],
+    "cos"
+);
+
+export function handleSounds(tick) {
+    let p = getDayPhase();
+    ambientDay.volume(dayAmbientSoundCue.getValueAt(p) * globalSoundVolume * ambientSoundVolume * 0.6);
+    ambientNight.volume(nightAmbientSoundCue.getValueAt(p) * globalSoundVolume * ambientSoundVolume * 0.6);
+    ambientMusic.volume(globalSoundVolume * musicSoundVolume);
+}
+
diff --git a/src/Game/UIPipes/UIPipes.js b/src/Game/UIPipes/UIPipes.js
index 99f6bfc..c6f2f3a 100644
--- a/src/Game/UIPipes/UIPipes.js
+++ b/src/Game/UIPipes/UIPipes.js
@@ -38,4 +38,10 @@ export const UIObtainedResourcesPipe = new StateStorage({
 export const UIGameTimePipe = new StateStorage({
     gameTime: {},
     gameSecondsPass: 0 
+});
+
+export const UIGameSound = new StateStorage({
+    master: 1.0,
+    music: 0.3,
+    ambient: 1.0
 });
\ No newline at end of file
diff --git a/src/Game/Utils/DataTypes.utils.js b/src/Game/Utils/DataTypes.utils.js
index 52961a0..39ec34e 100644
--- a/src/Game/Utils/DataTypes.utils.js
+++ b/src/Game/Utils/DataTypes.utils.js
@@ -168,3 +168,39 @@ export class RGBCue {
         }
     }
 };
+
+export class NumberCue {
+        /**
+     * 
+     * @param {[Number]} numbers
+     * @param {[Number]} midpoints points in range [0, 1] 
+     * @param {String} f interpolation type. default 'lin'
+     */
+        constructor(numbers, midpoints, f = 'lin')
+        {
+            this.numbers = numbers;
+            this.midpoints = midpoints;
+            this.interpolationFunction = f;
+        }
+    
+        /**
+         * 
+         * @param {Number} point 
+         */
+        getValueAt(point)
+        {
+            let idx = this.#getPointIndex(point);
+            return interpolateWith(this.numbers[idx-1], this.numbers[idx], mapRange(point, this.midpoints[idx-1], this.midpoints[idx], 0.0, 1.0), this.interpolationFunction);
+        }
+    
+        /**
+         * 
+         * @param {Number} point 
+         */
+        #getPointIndex(point)
+        {
+            for (let i = 0; i < this.midpoints.length; i++) {
+                if(point < this.midpoints[i]) return i;
+            }
+        }
+}
diff --git a/src/Game/World/DayNightCycle.js b/src/Game/World/DayNightCycle.js
index 737b481..5957703 100644
--- a/src/Game/World/DayNightCycle.js
+++ b/src/Game/World/DayNightCycle.js
@@ -2,10 +2,10 @@ import { BC_WORLD, PRNG } from "../GlobalVariables/GlobalVariables";
 import { UIGameTimePipe } from "../UIPipes/UIPipes";
 import { RGBColor, RGBCue } from "../Utils/DataTypes.utils";
 
-let timeElapsed = PRNG() * 8743264873;
+let timeElapsed = PRNG() * 37992648739;
 
 // ex: scaling = 10; 1 game minute = 6 real seconds;
-let timeScaling = 600.0;
+let timeScaling = 300.0;
 
 const gameSecondsInGameMinute = 60;
 const gameMinutesInGameHour = 60;
@@ -18,7 +18,15 @@ let dayColor = new RGBColor(255, 255, 255);
 let currentColor = new RGBColor(0, 0, 0);
 
 let dayColorsCue = new RGBCue(
-    [new RGBColor(1, 22, 46), new RGBColor(1, 66, 109), new RGBColor(255, 255, 255), new RGBColor(255, 255, 192), new RGBColor(136, 99, 77), new RGBColor(1, 66, 109), new RGBColor(1, 22, 46)],
+    [
+        new RGBColor(1, 22, 46),
+        new RGBColor(1, 66, 109),
+        new RGBColor(255, 255, 255),
+        new RGBColor(255, 255, 192),
+        new RGBColor(136, 99, 77),
+        new RGBColor(1, 66, 109),
+        new RGBColor(1, 22, 46),
+    ],
     [0.0, 0.15, 0.4, 0.75, 0.8, 0.9, 1.0],
     "cos"
 );
@@ -29,12 +37,8 @@ export function handleDayNightCycle(tick) {
         s.gameTime = getPrettyGameTimeNow();
         s.gameSecondsPass = Math.floor(timeElapsed);
     });
-    let tt =
-        (Math.floor(timeElapsed) % (gameSecondsInGameMinute * gameMinutesInGameHour * gameHoursInGameDay)) /
-        (gameSecondsInGameMinute * gameMinutesInGameHour * gameHoursInGameDay);
-    // let t = Math.abs(Math.sin(Math.PI * tt));
-    // console.log(tt);
-    currentColor = dayColorsCue.getColorAt(tt);
+
+    currentColor = dayColorsCue.getColorAt(getDayPhase());
     // currentColor = dayColor.multiplyByNumber(t);
     // console.log(((Math.floor(timeElapsed) % (gameSecondsInGameMinute * gameMinutesInGameHour * gameHoursInGameDay)) / (gameSecondsInGameMinute * gameMinutesInGameHour * gameHoursInGameDay)));
     // console.log(currentColor.toHex());
@@ -43,6 +47,13 @@ export function handleDayNightCycle(tick) {
     BC_WORLD.tint = currentColor.toNumber();
 }
 
+export function getDayPhase() {
+    return (
+        (Math.floor(timeElapsed) % (gameSecondsInGameMinute * gameMinutesInGameHour * gameHoursInGameDay)) /
+        (gameSecondsInGameMinute * gameMinutesInGameHour * gameHoursInGameDay)
+    );
+}
+
 export function getPrettyGameTimePassed() {
     let secondsPass = Math.floor(timeElapsed);
     let minutesPass = Math.floor(secondsPass / gameSecondsInGameMinute);
diff --git a/src/UI/States/HUD/HUD.svelte b/src/UI/States/HUD/HUD.svelte
index c035330..95a65bf 100644
--- a/src/UI/States/HUD/HUD.svelte
+++ b/src/UI/States/HUD/HUD.svelte
@@ -78,6 +78,18 @@
                         })
                     }} class={"w-full focus:outline-none mt-4 bg-slate-800 hover:bg-slate-800 p-4 text-2xl border-2 hover:border-amber-600 " + (selectedBuilding === 3 ? "border-amber-600":"border-slate-700")}>House #4</button>
                 </div>
+                <div class="flex flex-col items-center gap-2 w-full">
+                    <button on:click={()=>{
+                        UIMainPipe.update((s)=>{
+                            s.selectedBuilding = 4;
+                        })
+                    }} class={"w-full focus:outline-none mt-4 bg-slate-800 hover:bg-slate-800 p-4 text-2xl border-2 hover:border-amber-600 " + (selectedBuilding === 4 ? "border-amber-600":"border-slate-700")}>House #5</button>
+                    <button on:click={()=>{
+                        UIMainPipe.update((s)=>{
+                            s.selectedBuilding = 5;
+                        })
+                    }} class={"w-full focus:outline-none mt-4 bg-slate-800 hover:bg-slate-800 p-4 text-2xl border-2 hover:border-amber-600 " + (selectedBuilding === 5 ? "border-amber-600":"border-slate-700")}>House #6</button>
+                </div>
             </div>
             {/if}
         </div>