代碼如下：

1. 先打開(kāi)目標(biāo)場(chǎng)景：EditorSceneManager.OpenScene
2. Play：EditorApplication.isPlaying = true

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using UnityEditor.SceneManagement;

public class Tools
{
    [MenuItem("Tools/從Start場(chǎng)景開(kāi)始Play")]
    private static void PlayStartScene()
    {
        EditorSceneManager.OpenScene("Assets/Scenes/Start.unity");
        EditorApplication.isPlaying = true;
    }
}