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What are we watching?
(beehaw.org)
Anime; the one thing that gets us closer to each other and brings us together.
All spoilers must be tagged!
It's certainly a can of worms waiting to be opened. For anime onlies, there is unfortunately no perfect watch order as Fate/Stay Night does not have a perfect anime adaptation, and it is essentially the base for all other titles in the franchise.
If you want to get into the Fate anime series (but don't necessarily want to read the original visual novel), your best bet is to start with either the 2014 Fate/Stay Night Unlimited Blade Works series, or 2006 Fate/Stay Night. Neither is a perfect introduction, for reasons that you can search up since this topic is discussed a lot.
After that you can continue with Fate/Zero, and pretty much any of the Fate titles.