Looking to watch Doomsday Machine? Lee Sholem's 1972 Science Fiction film is available through several streaming and digital platforms. It's currently streaming on Amazon Prime Video, Night Flight Plus, Midnight Pulp Amazon Channel, Shout! Factory Amazon Channel, Artiflix, Cineverse Amazon Channel, fuboTV, Amazon Prime Video with Ads, Screambox Amazon Channel, MGM Plus, Philo, Bloodstream, MGM+ Amazon Channel, YouTube TV, JustWatch TV, Fawesome, Plex, Amazon Prime Video Free with Ads, Midnight Pulp, Shout! Factory TV, Xumo Play, Tubi TV, Cineverse, and The Roku Channel. Rental options start at $3.99, available on Amazon Video. If you'd like to own it digitally, you can buy Doomsday Machine starting from $9.99 on Amazon Video.