Have an HBO Watch Party subscription but need to watch shows and movies without access to the internet? We've got your back. Here's everything you need to know about downloading content from HBO Max to your devices. If you haven't already signed up for HBO Max, a monthly subscription costs $14.99 and includes a seven-day free trial. There, you can watch all ten seasons of Friends, Game of Thrones, and Warner Bros blockbusters like Joker, among other things You can sign up for HBO Max on their website.