Add instructions

Assets/Scenes/Game.unity

@@ -249,6 +249,7 @@ RectTransform:
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@@ -766,6 +767,10 @@ PrefabInstance:
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Assets/Scripts/Bubble.cs

@@ -128,8 +128,9 @@ public class Bubble : MonoBehaviour
 
     private IEnumerator BlockMovement()
     {
+        // using delta for touch controls triggers too many events, so we do a little hacky hack
         moving = true;
-        yield return new WaitForSeconds(0.2f);
+        yield return new WaitForSeconds(0.1f);
         moving = false;
     }
 

Assets/Scripts/GameLoop.cs

@@ -14,6 +14,7 @@ public class GameLoop : MonoBehaviour
     private const int MAX_BUBBLES = 200;
     private const string HIGH_SCORE_PREF = "high_score";
     private const string GAME_SCENE = "Game";
+    private const string MAIN_SCENE = "Main";
 
     public static GameLoop Instance { get; private set; }
 
@@ -23,6 +24,7 @@ public class GameLoop : MonoBehaviour
     [SerializeField] private TextMeshProUGUI highScoreText;  
     [SerializeField] private TextMeshProUGUI timerText; 
     [SerializeField] private Button playButton;
+    [SerializeField] private Button returnButton;
     [SerializeField] private GameObject gameOverObject;
     [SerializeField] private float spawnDelayMax;
     [SerializeField] private float spawnDelayMin;
@@ -51,11 +53,13 @@ public class GameLoop : MonoBehaviour
         highScore = PlayerPrefs.GetFloat(HIGH_SCORE_PREF);
         highScoreText.text = "High Score: " + highScore;
         playButton.onClick.AddListener(HandlePlayClicked);
+        returnButton.onClick.AddListener(HandleReturnClicked);
     }
 
     private void OnDestroy() 
     { 
         playButton.onClick.RemoveListener(HandlePlayClicked);
+        returnButton.onClick.RemoveListener(HandleReturnClicked);
     }
 
     private void Start()
@@ -71,6 +75,11 @@ public class GameLoop : MonoBehaviour
         SceneManager.LoadScene(GAME_SCENE);
     }
 
+    private void HandleReturnClicked()
+    {
+        SceneManager.LoadScene(MAIN_SCENE);
+    }
+
     private void UpdateHUD()
     {
         scoreText.text = "Score: " + score.ToString();

Assets/Scripts/MainMenu.cs

@@ -15,6 +15,9 @@ public class MainMenu : MonoBehaviour
 
     [SerializeField] private TextMeshProUGUI scoreText; 
     [SerializeField] private Button playButton;
+    [SerializeField] private Button infoButton;
+    [SerializeField] private Button infoObject;
+
 
     private float highScore;
 
@@ -23,15 +26,29 @@ public class MainMenu : MonoBehaviour
         highScore = PlayerPrefs.GetFloat(HIGH_SCORE_PREF);
         scoreText.text = "High Score: " + highScore;
         playButton.onClick.AddListener(HandlePlayClicked);
+        infoButton.onClick.AddListener(HandleInfoClicked);
+        infoObject.gameObject.SetActive(false);
+        infoObject.onClick.AddListener(CloseInfo);
     }
 
     private void OnDestroy() 
     { 
         playButton.onClick.RemoveListener(HandlePlayClicked);
+        infoButton.onClick.RemoveListener(HandleInfoClicked);
     }
 
     private void HandlePlayClicked()
     {
         SceneManager.LoadScene(GAME_SCENE);
     }
+
+    private void HandleInfoClicked()
+    {
+        infoObject.gameObject.SetActive(true);
+    }
+
+    private void CloseInfo()
+    {
+        infoObject.gameObject.SetActive(false);
+    }
 }
\ No newline at end of file