Yu-Gi-Oh! - watch online: streaming, buy or rent
Currently you are able to watch "Yu-Gi-Oh!" streaming on Midnight Pulp Amazon Channel, Kartoon Channel Amazon Channel, RetroCrush Amazon Channel, Retrocrush, Amazon Prime Video, Crunchyroll Amazon Channel, Amazon Prime Video with Ads, Netflix, Crunchyroll, Philo, DisneyNOW, Netflix Standard with Ads or for free with ads on Amazon Prime Video Free with Ads, Retrocrush. It is also possible to buy "Yu-Gi-Oh!" as download on Apple TV, Amazon Video.
Besides streaming, you can also buy the series on DVD from Amazon DVD / Blu-ray and watch it anytime.
You can also stream the title for free on Hoopla, Plex, Plex Player, Plex Channel.