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When Iron Man is sent to Thanos' newly assembled Battleworld, he discovers there is an odd assortment of heroes there, too. Can Iron Man and this rag-tag group – Captain Marvel, Spider-Ham, Groot, and Throg – figure out what the Mad Titan wants and why they've been brought to this strange, new world?

How to Watch Marvel Battleworld: Mystery of the Thanostones Legally and Safely

If you want to stream Marvel Battleworld: Mystery of the Thanostones through reputable and legal services, there are a few good options depending on where you are. Subscription platforms like HBO Max, Disney+, Netflix, Amazon Prime Video, and Apple TV+ sometimes carry Marvel Battleworld: Mystery of the Thanostones films or related DC titles—though availability depends on your country.

If you’d rather not commit to a subscription, there are ad‑supported, free (but legal) platforms such as Tubi, Pluto TV, Peacock or Crackle (where available in your region) that occasionally host superhero films.

Lastly, don’t forget about library‑linked streaming options like Kanopy or Hoopla (if your library or university is registered), and official uploads by film distributors on YouTube—these can also give you legal access to classic movies.