Selection.objects

Description

The actual unfiltered selection from the Scene.

All objects will be returned, including assets in projects. You can also assign objects to the selection.

Additional resources: Selection.instanceIDs.


Scriptable Wizard that lets you select GameObjects by their tag.

using UnityEngine;
using UnityEditor;

class SelectAllOfTag : ScriptableWizard
{
    public string tagName = "ExampleTag";

    [MenuItem("Example/Select All of Tag...")]
    static void SelectAllOfTagWizard()
    {
        ScriptableWizard.DisplayWizard(
            "Select All of Tag...",
            typeof(SelectAllOfTag),
            "Make Selection");
    }

    void OnWizardCreate()
    {
        GameObject[] gos = GameObject.FindGameObjectsWithTag(tagName);
        Selection.objects = gos;
    }
}