Update :3

Assets/MainMenuStuffs/ButtonScript.cs

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+using UnityEngine;
+using UnityEngine.UI;
+using System.Collections;
+using UnityEngine.SceneManagement;
+
+public class ButtonScript : MonoBehaviour
+{
+	public Button yourButton;
+	public string nextSceneName;
+	void Start()
+	{
+		Button button = yourButton.GetComponent<Button>();
+		button.onClick.AddListener(OnClick);
+	}
+
+	void OnClick()
+	{
+		SceneManager.LoadScene(nextSceneName); // load the next scene
+	}
+}

Assets/MainMenuStuffs/ButtonScript.cs.meta

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Assets/MainMenuStuffs/MenuScript.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Audio;
+using UnityEngine.SceneManagement;
+
+public class MenuScript : MonoBehaviour
+{
+  // Scene changer
+  public void Difficulty()
+  {
+    SceneManager.LoadScene("TempDiffScene");
+  }
+  public void MainMenu()
+  {
+    SceneManager.LoadScene("TempMainMenu");
+  }
+  public void Settings()
+  {
+    SceneManager.LoadScene("Settings");
+  }
+    public void Easy()
+    {
+        SceneManager.LoadScene("25x25Scene");
+        Time.timeScale = 1f;
+    }
+    public void Medium()
+    {
+        SceneManager.LoadScene("35x35Scene");
+        Time.timeScale = 1f;
+    }
+    public void Hard()
+    {
+        SceneManager.LoadScene("50x50Scene");
+        Time.timeScale = 1f;
+    }
+
+
+    // Buttons
+    public void ExitGame()
+  {
+    Application.Quit();
+  }
+
+}

Assets/MainMenuStuffs/MenuScript.cs.meta

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Assets/MainMenuStuffs/MenuScript1.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Audio;
+using UnityEngine.SceneManagement;
+
+public class MenuScript1 : MonoBehaviour
+{
+  // Scene changer
+  public void Difficulty()
+  {
+    SceneManager.LoadScene("TempDiffScene");
+  }
+  public void MainMenu()
+  {
+    SceneManager.LoadScene("TempMainMenu");
+  }
+  public void Settings()
+  {
+    SceneManager.LoadScene("Settings");
+  }
+    public void Easy()
+    {
+        SceneManager.LoadScene("25x25Scene");
+        Time.timeScale = 1f;
+    }
+    public void Medium()
+    {
+        SceneManager.LoadScene("35x35Scene");
+        Time.timeScale = 1f;
+    }
+    public void Hard()
+    {
+        SceneManager.LoadScene("50x50Scene");
+        Time.timeScale = 1f;
+    }
+
+
+    // Buttons
+    public void ExitGame()
+  {
+    Application.Quit();
+  }
+
+}

Assets/MainMenuStuffs/MenuScript1.cs.meta

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Assets/MainMenuStuffs/PauseMenu.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PauseMenu : MonoBehaviour
+{
+
+    public bool GameIsPaused = false;
+
+    public GameObject pauseMenuUI;
+
+
+
+
+    void Update()
+    {
+        if (Input.GetKeyDown(KeyCode.Escape))
+        {
+          if (GameIsPaused == true)
+          {
+            Resume();
+          } 
+          else
+            {
+                Pause();
+            }
+
+           
+
+
+            
+
+        }
+    }
+
+    public void Resume ()
+    {
+      pauseMenuUI.SetActive(false);
+      Time.timeScale = 1f;
+      GameIsPaused = false;
+      Cursor.lockState = CursorLockMode.Locked;
+    }
+    void Pause ()
+    {
+      pauseMenuUI.SetActive(true);
+      Time.timeScale = 0f;
+      GameIsPaused = true;
+      Cursor.lockState = CursorLockMode.None;
+        Cursor.visible = true;
+    }
+
+}

Assets/MainMenuStuffs/PauseMenu.cs.meta

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Assets/MainMenuStuffs/PauseMenu1.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PauseMenu1 : MonoBehaviour
+{
+
+    public bool GameIsPaused = false;
+
+    public GameObject pauseMenuUI;
+
+
+
+
+    void Update()
+    {
+        if (Input.GetKeyDown(KeyCode.Escape))
+        {
+          if (GameIsPaused == true)
+          {
+            Resume();
+          } 
+          else
+            {
+                Pause();
+            }
+
+           
+
+
+            
+
+        }
+    }
+
+    public void Resume ()
+    {
+      pauseMenuUI.SetActive(false);
+      Time.timeScale = 1f;
+      GameIsPaused = false;
+      Cursor.lockState = CursorLockMode.Locked;
+    }
+    void Pause ()
+    {
+      pauseMenuUI.SetActive(true);
+      Time.timeScale = 0f;
+      GameIsPaused = true;
+      Cursor.lockState = CursorLockMode.None;
+        Cursor.visible = true;
+    }
+
+}

Assets/MainMenuStuffs/PauseMenu1.cs.meta

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Assets/MainMenuStuffs/UnlockCursor.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class UnlockCursor : MonoBehaviour
+{
+    // Start is called before the first frame update
+    void Start()
+    {
+        
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        Cursor.visible = true;
+        Cursor.lockState = CursorLockMode.None;  
+    }
+}

Assets/MainMenuStuffs/UnlockCursor.cs.meta

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