This is not a "talk about anime" but it's a question about anime....so I don't know if I can ask this here, but I'm really really curious!

Okay, so this one night, I went to anime club and watched part of anime (I arrived late), I knew it was Fate Stay night (cause I've heard of it and seen some characters' pics) but I didn't know ANYTHING about this anime, so it was confusing for me to watch.
I did think the anime looked really good, so I borrowed DVD of Fate/Stay night DVD 1 (we have anme DVD library in our club)
so I started watching it, and...I watched up to episode 12? 13?

And then I got REALLY confused, not because of the storyline but because of paradox I've fallen into.
You see, the anime I watched in anime club is Fate Stay night, all the characters are same. But story's different!
The part I watched in anime club involves "Archer's betrayal" and "Death of Ilya and Berserk"

However in the anime episodes I watched later involves "Archer's death" and Berserk does die but differently....Shinji killed Berserk and Ilya in the part I watched at anime club but in the anime episodes I watched, Ilya and Berserk kills Shinji....

I wouldn't be this confused if I didn't watch that part in anime club....so yeah, are there like two versions of fate stay night???
I searched on internet though, there was like only one Fate/Stay night....

Someone help me!!

Um...I think what you watched in the anime club was Fate/Stay Night : Unlimited Blade Works (anime movie).You see, the visual novel which they based the anime and the movie on has 3 different routes.The anime was based on the "Fate" route for the most part (that still had some elements from the other 2 routes) , but the movie was based on the second route of the VN.And that's why the story is different .

Ah, I see. Thanks When I searched, I did see the movie version of Fate Stay Night, but movies are usually prequel or sequel, so I didn't think of the movie possibility, thanks for clearing that up!