old_contents: from django.contrib import admin
  
  # Register your models here.
  
new_contents: from django.contrib import admin
  
  # Register your models here.
  from .models import Build, Game, Title
  
  admin.site.register(Build)
  admin.site.register(Game)
  admin.site.register(Title)
subject: Add Game, Title, and Build to the admin page.