diff --git a/src/game/assets/audio/bgm.mpeg b/src/game2/assets/audio/bgm.mpeg
similarity index 100%
rename from src/game/assets/audio/bgm.mpeg
rename to src/game2/assets/audio/bgm.mpeg
diff --git a/src/game/assets/audio/end_bgm.mp3 b/src/game2/assets/audio/end_bgm.mp3
similarity index 100%
rename from src/game/assets/audio/end_bgm.mp3
rename to src/game2/assets/audio/end_bgm.mp3
diff --git a/src/game/assets/images/1.jpeg b/src/game2/assets/images/1.jpeg
similarity index 100%
rename from src/game/assets/images/1.jpeg
rename to src/game2/assets/images/1.jpeg
diff --git a/src/game/assets/images/2.jpeg b/src/game2/assets/images/2.jpeg
similarity index 100%
rename from src/game/assets/images/2.jpeg
rename to src/game2/assets/images/2.jpeg
diff --git a/src/game/assets/images/3.jpeg b/src/game2/assets/images/3.jpeg
similarity index 100%
rename from src/game/assets/images/3.jpeg
rename to src/game2/assets/images/3.jpeg
diff --git a/src/game/assets/images/4.jpeg b/src/game2/assets/images/4.jpeg
similarity index 100%
rename from src/game/assets/images/4.jpeg
rename to src/game2/assets/images/4.jpeg
diff --git a/src/game/game.js b/src/game2/game.js
similarity index 100%
rename from src/game/game.js
rename to src/game2/game.js
diff --git a/src/game/main.css b/src/game2/main.css
similarity index 100%
rename from src/game/main.css
rename to src/game2/main.css
diff --git a/src/game/main.html b/src/game2/main.html
similarity index 100%
rename from src/game/main.html
rename to src/game2/main.html
diff --git a/src/game/questions.js b/src/game2/questions.js
similarity index 50%
rename from src/game/questions.js
rename to src/game2/questions.js
index bdfc9f5..43f40df 100644
--- a/src/game/questions.js
+++ b/src/game2/questions.js
@@ -12,9 +12,9 @@ function shuffleOptions(options) {
 
 // Generating question bank
 function lightColor() {
-    let wavelengths = [415, 473, 533, 585, 605, 685];
-    let possibleColors = ['Violet', 'Blue', 'Green', 'Yellow', 'Orange', 'Red']
-    let randNum = getRandomInt(0, 5);
+    let wavelengths = [405, 473, 532, 585, 685];
+    let possibleColors = ['Violet', 'Blue', 'Green', 'Yellow', 'Red']
+    let randNum = getRandomInt(0, 4);
     
     const wavelength = wavelengths[randNum]
     const correctColor = possibleColors[randNum]
@@ -34,7 +34,9 @@ function lightColor() {
     };
 }
 
-function pathDiffConst() {
+
+// TWO SOURCE INTERFERENCE
+function pathDiffConst_inPhase() {
     const p1 = getRandomInt(2, 10)
     const p2 = p1 + 1 * getRandomInt(1, 5)
 
@@ -49,7 +51,7 @@ function pathDiffConst() {
     const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
 
     return {
-        question: `If path 1 is ${p1}λ and path 2 is ${p2}λ from screen, What is their phase difference and interference type?`,
+        question: `Two sources emit coherent Sound waves in phase. If path 1 is ${p1}λ and path 2 is ${p2}λ from screen, What is their phase difference and interference type?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -58,7 +60,31 @@ function pathDiffConst() {
     };
 }
 
-function pathDiffDest() {
+function pathDiffConst_inAntiphase() {
+    const p1 = getRandomInt(2, 10)
+    const p2 = p1 + 1 * getRandomInt(1, 5)
+
+    const pathDiff = p2 - p1
+    const phaseDiff = pathDiff * 2
+
+    const wrongOpt1 = `Constructive Interference, Phase Difference Δϕ = ${phaseDiff}π`
+    const correctOpt = `Destructive Interference, Phase Difference Δϕ = ${phaseDiff}π`
+    const wrongOpt2 = `Destructive Interference, Phase Difference Δϕ = ${pathDiff}π`
+    const wrongOpt3 = `Constructive Interference, Phase Difference Δϕ = ${pathDiff}π`
+
+    const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
+
+    return {
+        question: `Two sources emit coherent sound waves in antiphase. If path 1 is ${p1}λ and path 2 is ${p2}λ from screen, What is their phase difference and interference type?`,
+        options: options,
+        correctAnswer: correctOpt,
+        explanation: 
+        `The correct answer is ${correctOpt} because path difference = ${pathDiff}λ and phase difference = ${phaseDiff}π`,
+         ShowImage: false
+    };
+}
+
+function pathDiffDest_inPhase() {
     const p1 = getRandomInt(2, 10)
     const p2 = p1 + 0.5 + getRandomInt(1, 5)
 
@@ -73,7 +99,7 @@ function pathDiffDest() {
     const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
 
     return {
-        question: `If path 1 is ${p1}λ and path 2 is ${p2}λ from screen, What is their phase difference and interference type?`,
+        question: `Two sources emit coherent sound waves in phase. If path 1 is ${p1}λ and path 2 is ${p2}λ from screen, What is their phase difference and interference type?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -83,16 +109,40 @@ function pathDiffDest() {
 
 }
 
-function possDestPhaseDiff() {
+function pathDiffDest_inAntiphase() {
+    const p1 = getRandomInt(2, 10)
+    const p2 = p1 + 1 * getRandomInt(1, 5)
+
+    const pathDiff = p2 - p1
+    const phaseDiff = pathDiff * 2
+
+    const correctOpt = `Constructive Interference, Phase Difference Δϕ = ${phaseDiff}π`
+    const wrongOpt1 = `Destructive Interference, Phase Difference Δϕ = ${phaseDiff}π`
+    const wrongOpt2 = `Destructive Interference, Phase Difference Δϕ = ${pathDiff}π`
+    const wrongOpt3 = `Constructive Interference, Phase Difference Δϕ = ${pathDiff}π`
+
+    const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
+
+    return {
+        question: `Two sources emit coherent Sound waves in antiphase. If path 1 is ${p1}λ and path 2 is ${p2}λ from screen, What is their phase difference and interference type?`,
+        options: options,
+        correctAnswer: correctOpt,
+        explanation: 
+        `The correct answer is ${correctOpt} because path difference = ${pathDiff}λ and phase difference = ${phaseDiff}π`,
+         ShowImage: false
+    };
+}
+
+function possDestPhaseDiff_inPhase() {
     const correctOpt = `π, 3π, 5π, ...`
     const wrongOpt1 = `2π, 4π, 6π, ...`
-    const wrongOpt2 = `0, 2π, 4π, ...`
-    const wrongOpt3 = `±π, ±3π, ±5π, ...`
+    const wrongOpt2 = `0, π, 2π, ...`
+    const wrongOpt3 = `π/2, 3π/2, 5π/2, ...`
 
     const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
 
     return {
-        question: `Which of the below lists the possible phase difference for destructive interference?`,
+        question: `Which of the below lists the possible phase difference for destructive interference of two sound waves in phase?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -101,11 +151,29 @@ function possDestPhaseDiff() {
     };
 }
 
-function possConstPhaseDiff() {
+function possDestPhaseDiff_inAntiphase() {
     const correctOpt = `0, 2π, 4π, ...`
-    const wrongOpt1 = `2π, 4π, 6π, ...`
-    const wrongOpt2 = `π, 3π, 5π, ...`
-    const wrongOpt3 = `±π, ±3π, ±5π, ...`
+    const wrongOpt1 = `π, 3π, 5π, ...`
+    const wrongOpt2 = `0, π, 2π, ...`
+    const wrongOpt3 = `π/2, 3π/2, 5π/2, ...`
+
+    const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
+
+    return {
+        question: `Which of the below lists the possible phase difference for destructive interference of two sound waves in antiphase?`,
+        options: options,
+        correctAnswer: correctOpt,
+        explanation: 
+        `For desctructive interference, phase difference is always a positive odd number!`,
+        ShowImage: false
+    };
+}
+
+function possConstPhaseDiff_inPhase() {
+    const correctOpt = `0, 2π, 4π, ...`
+    const wrongOpt1 = `π, 3π, 5π, ...`
+    const wrongOpt2 = `0, π, 2π, ...`
+    const wrongOpt3 = `π/2, 3π/2, 5π/2, ...`
 
     const options = [correctOpt, wrongOpt1, wrongOpt2, wrongOpt3]
     for (let i = options.length - 1; i > 0; i--) {
@@ -114,7 +182,7 @@ function possConstPhaseDiff() {
     }
 
     return {
-        question: `Which of the below lists the possible phase difference for constructive interference?`,
+        question: `Which of the below lists the possible phase difference for constructive interference of two sound waves in phase?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -123,8 +191,28 @@ function possConstPhaseDiff() {
     };
 }
 
-function increaseSlitWidth() {
-    const correctOpt = `The intensity increases while the spacing between maxima points decreases`
+function possConstPhaseDiff_inAntiphase() {
+    const correctOpt = `π, 3π, 5π, ...`
+    const wrongOpt1 = `2π, 4π, 6π, ...`
+    const wrongOpt2 = `0, π, 2π, ...`
+    const wrongOpt3 = `π/2, 3π/2, 5π/2, ...`
+
+    const options = shuffleOptions([correctOpt, wrongOpt1, wrongOpt2, wrongOpt3])
+
+    return {
+        question: `Which of the below lists the possible phase difference for constructive interference of two sound waves in antiphase?`,
+        options: options,
+        correctAnswer: correctOpt,
+        explanation: 
+        `For desctructive interference, phase difference is always a positive odd number!`,
+        ShowImage: false
+    };
+}
+
+
+//SINGLE SLIT EXPERIMENTS
+function SS_increaseSlitWidth() {
+    const correctOpt = `The intensity increases while the spacing between maxima points doesn't change`
     const wrongOpt1 = `Only the spacing between maxima points increases`
     const wrongOpt2  = `Both the intensity and the spacing between maxima points increases`
     const wrongOpt3 = `Both the intensity and the spacing between maxima points decreases`
@@ -139,7 +227,7 @@ function increaseSlitWidth() {
     const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
 
     return {
-        question: `If you increase the slit width, what happens to the intensity profile? ?`,
+        question: `For a single slit experiment, if you increase the slit width, what happens to the intensity profile?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -148,9 +236,9 @@ function increaseSlitWidth() {
     };
 }
 
-function decreaseSlitWidth() {
+function SS_decreaseSlitWidth() {
     const correctOpt = `The intensity decreases while the spacing between maxima points increases`
-    const wrongOpt1 = `Only the spacing between maxima points decreases`
+    const wrongOpt1 = `Only the spacing between maxima points decreases doens't change`
     const wrongOpt2  = `Both the intensity and the spacing between maxima points increases`
     const wrongOpt3 = `Both the intensity and the spacing between maxima points decreases`
     const wrongOpt4 = `The intensity increases while the spacing between maxima points decreases`
@@ -164,7 +252,7 @@ function decreaseSlitWidth() {
     const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
 
     return {
-        question: `If you decrease the slit width, what happens to the intensity profile?`,
+        question: `For a double slit, if you decrease the slit width, what happens to the intensity profile?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -173,7 +261,64 @@ function decreaseSlitWidth() {
     };
 }
 
-function increaseWaveLength() {
+function SS_increaseWaveLength() {
+    const correctOpt = `Angle θ increases while the width of the width of Central Maxima decreases`
+    const wrongOpt1 = `Angle θ decreases while the width of the width of Central Maxima increases`
+    const wrongOpt2  = `Angle θ increases while the width of the width of Central Maxima remains the same`
+    const wrongOpt3 = `Angle θ decreases while the width of the width of Central Maxima remains the same`
+    const wrongOpt4 = `Angle θ remains the same while the width of the width of Central Maxima increases`
+    const wrongOpt5 = `Angle θ remains the smae while the width of the width of Central Maxima decreases`
+
+    
+    const wrongOpts = [wrongOpt1, wrongOpt2, wrongOpt3, wrongOpt4, wrongOpt5]
+    const shuffledWrongOpts = wrongOpts.sort(() => 0.5 - Math.random()).slice(0, 3);
+
+
+    const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
+
+    return {
+        question: `For a single slit, if you increase the wavelength, what happens to the intensity profile?`,
+        options: options,
+        correctAnswer: correctOpt,
+        explanation: 
+        `${correctOpt} because wavelength is directly proportional to θ and directly unproportional to width of central maxima!`,
+        ShowImage: false
+    };
+
+}
+
+function SS_decreaseWaveLength() {
+    const wrongOpt1 = `Angle θ increases while the width of the width of Central Maxima decreases`
+    const correctOpt = `Angle θ decreases while the width of the width of Central Maxima increases`
+    const wrongOpt2  = `Angle θ increases while the width of the width of Central Maxima remains the same`
+    const wrongOpt3 = `Angle θ decreases while the width of the width of Central Maxima remains the same`
+    const wrongOpt4 = `Angle θ remains the same while the width of the width of Central Maxima increases`
+    const wrongOpt5 = `Angle θ remains the smae while the width of the width of Central Maxima decreases`
+
+    
+    const wrongOpts = [wrongOpt1, wrongOpt2, wrongOpt3, wrongOpt4, wrongOpt5]
+    const shuffledWrongOpts = wrongOpts.sort(() => 0.5 - Math.random()).slice(0, 3);
+
+
+    const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
+
+    return {
+        question: `For a single slit, if you increase the wavelength, what happens to the intensity profile?`,
+        options: options,
+        correctAnswer: correctOpt,
+        explanation: 
+        `${correctOpt} because wavelength is directly proportional to θ and directly unproportional to width of central maxima!`,
+        ShowImage: false
+    };
+
+}
+
+
+
+
+
+//DOUBLE SLIT EXPERIMENTS
+function DS_increaseWaveLength() {
     const correctOpt = `Only the spacing between maxima points increases`
     const wrongOpt1 = `Only the spacing between maxima points decreases`
     const wrongOpt2  = `Both the intensity and the spacing between maxima points increases`
@@ -189,7 +334,7 @@ function increaseWaveLength() {
     const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
 
     return {
-        question: `If you increase the wavelength, what happens to the intensity profile?`,
+        question: `For a double slit, if you increase the wavelength, what happens to the intensity profile?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -199,7 +344,7 @@ function increaseWaveLength() {
 
 }
 
-function decreaseWaveLength() {
+function DS_decreaseWaveLength() {
     const correctOpt = `Only the spacing between maxima points decreases`
     const wrongOpt1 = `Only the spacing between maxima points increases`
     const wrongOpt2  = `Both the intensity and the spacing between maxima points increases`
@@ -215,7 +360,7 @@ function decreaseWaveLength() {
     const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
 
     return {
-        question: `If you decrease the wavelength, what happens to the intensity profile? ?`,
+        question: `For a double slit, if you decrease the wavelength, what happens to the intensity profile?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -225,7 +370,7 @@ function decreaseWaveLength() {
 
 }
 
-function increaseSlitSeparation() {
+function DS_increaseSlitSeparation() {
     const correctOpt = `Only the spacing between maxima points decreases`
     const wrongOpt1 = `Only the spacing between maxima points increases`
     const wrongOpt2  = `Both the intensity and the spacing between maxima points increases`
@@ -241,7 +386,7 @@ function increaseSlitSeparation() {
     const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
 
     return {
-        question: `If you increase the slit separation, what happens to the intensity profile?`,
+        question: `For a double slit, if you increase the slit separation, what happens to the intensity profile?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -251,7 +396,7 @@ function increaseSlitSeparation() {
 
 }
 
-function decreaseSlitSeparation() {
+function DS_decreaseSlitSeparation() {
     const correctOpt = `Only the spacing between maxima points increases`
     const wrongOpt1 = `Only the spacing between maxima points decreases`
     const wrongOpt2  = `Both the intensity and the spacing between maxima points increases`
@@ -267,7 +412,7 @@ function decreaseSlitSeparation() {
     const options = shuffleOptions([correctOpt, ...shuffledWrongOpts])
 
     return {
-        question: `If you decrease the slit separation, what happens to the intensity profile?`,
+        question: `For a double slit, if you decrease the slit separation, what happens to the intensity profile?`,
         options: options,
         correctAnswer: correctOpt,
         explanation: 
@@ -277,48 +422,128 @@ function decreaseSlitSeparation() {
 
 }
 
-function changeSlitSeparation(){
+
+//MULTIPLE SLIT (DIFFRACTION GRATING)
+function MS_increaseGrating(){}
+
+function MS_decreaseGrating(){}
+
+function MS_increaseWavelength(){}
+
+function MS_decreaseWavelength(){}
+
+function MS_SSEnvelope(){}
+
+
+
+
+//RANDOMISING THE QUESTIONS
+function pathDiff_Questions(){
+    rand = getRandomInt(0, 3)
+    if (rand === 0) {
+        return pathDiffConst_inAntiphase();
+    } else if (rand === 1) {
+        return pathDiffConst_inPhase();
+    } else if (rand === 2) {
+        return pathDiffDest_inAntiphase();
+    } else {
+        return pathDiffDest_inPhase();
+    }
+}
+
+function possPhaseDiff_Questions(){
+    rand = getRandomInt(0, 3)
+    if (rand === 0) {
+        return possConstPhaseDiff_inPhase();
+    } else if (rand === 1) {
+        return possDestPhaseDiff_inAntiphase();
+    } else if (rand === 2) {
+        return possDestPhaseDiff_inPhase();
+    } else {
+        return possConstPhaseDiff_inAntiphase();
+    }
+
+}
+
+function DS_changeSlitSeparation_Questons(){
+    if (getRandomInt(0, 1) === 1) {
+        return DS_increaseSlitSeparation();
+    } else {
+        return DS_decreaseSlitSeparation();
+    }
+}
+
+function DS_changeWavelength_Questions(){
     if (getRandomInt(0, 1) === 1) {
-        return increaseSlitSeparation()
+        return DS_decreaseWaveLength();
     } else {
-        return decreaseSlitSeparation()
+        return DS_increaseWaveLength();
     }
 }
 
-function changeWaveLength(){
+function SS_changeSlitWidth_Questions(){
     if (getRandomInt(0, 1) === 1) {
-        return decreaseWaveLength()
+        return SS_increaseSlitWidth();
     } else {
-        return increaseWaveLength()
+        return SS_decreaseSlitWidth();
     }
 }
 
-function changeSlitWidth(){
+function SS_changeWavelength_Questions(){
     if (getRandomInt(0, 1) === 1) {
-        return increaseSlitWidth()
+        return SS_decreaseWaveLength();
     } else {
-        return decreaseSlitWidth()
+        return SS_increaseWaveLength();
     }
 }
 
+function MS_changeGrating_Questions(){
+    if (getRandomInt(0, 1) === 1) {
+        return MS_decreaseGrating();
+    } else {
+        return MS_increaseGrating();
+    }
+}
+
+function MS_changeWavelength_Questions(){
+    if (getRandomInt(0, 1) === 1) {
+        return MS_decreaseWavelength();
+    } else {
+        return MS_increaseWavelength();
+    }
+}
+
+//GENERATING QUESTIONS
 function GenQuestion() {
-    randomQuestion = getRandomInt(0, 7)
+    randomQuestion = getRandomInt(0, 9)
     if (randomQuestion === 0) {
         return lightColor();
+
     } else if (randomQuestion === 1) {
-        return pathDiffConst()
+        return pathDiff_Questions();
+
     } else if (randomQuestion === 2) {
-        return pathDiffDest()
+        return possPhaseDiff_Questions();
+
     } else if (randomQuestion === 3) {
-        return possConstPhaseDiff()
+        return DS_changeSlitSeparation_Questons();
+
     } else if (randomQuestion === 4){
-        return possDestPhaseDiff()
+        return DS_changeWavelength_Questions();
+
     } else if (randomQuestion === 5) {
-        return changeSlitSeparation()
+        return SS_changeSlitWidth_Questions();
+
     } else if (randomQuestion === 6) {
-        return changeSlitWidth()
+        return SS_changeWavelength_Questions();
+
     } else if (randomQuestion === 7) {
-        return changeWaveLength()
+        return MS_changeGrating_Questions();
+
+    } else if (randomQuestion === 8) {
+        return SS_changeWavelength_Questions();
+    } else {
+        return MS_SSEnvelope();
     }
 
 
diff --git a/src/game/todo.txt b/src/game2/todo.txt
similarity index 100%
rename from src/game/todo.txt
rename to src/game2/todo.txt
diff --git a/src/text/game/main.md b/src/text/game/main.md
index ff5b211..0ca5565 100644
--- a/src/text/game/main.md
+++ b/src/text/game/main.md
@@ -3,4 +3,8 @@ If your answer is yes, Click onto the link below and you will be redirected to a
 
 If you are stuck, feel free to use our simulations for help!
 
-<a href='https://thetrustypwo.github.io/Superposition/game/main.html'>Link to quiz</a>
\ No newline at end of file
+### Normal Test
+<a href='https://thetrustypwo.github.io/Superposition/game1/main.html'>Link to quiz</a>
+
+### Are you UP for a challenge?
+<a href='https://thetrustypwo.github.io/Superposition/game2/main.html'>Link to quiz</a>