Add a very basic game example (A winner is you)

Assets/OnCollisionEnterEvent.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.Events;
+using UnityEngine.Serialization;
+
+public class OnCollisionEnterEvent : MonoBehaviour
+{
+    [SerializeField] private UnityEvent @event;
+    [SerializeField] private string otherGameObjectName = "Sphere";
+    
+    private void OnCollisionEnter(Collision other)
+    {
+        if (other.gameObject.name == otherGameObjectName)
+        {
+            @event.Invoke();
+        }
+    }
+}