September will see a few exciting new additions to HBO Max, but while you wait for Task with Mark Ruffalo to drop on September 7, there's plenty of good content there for your enjoyment already. There's a new season of Rick and Morty, a spinoff of Naked and Afraid, and a disturbing true crime docuseries about the dark side of Mormon influencer culture. Check out Watch With Us' recommendations for the HBO Max shows you must watch in September 2025. 'Rick and Morty' (2013-Present, Season 8 now streaming) Wubba lubba dub dub! The full eighth season of Rick and Morty is now on HBO Max.