Lucky Star and K-on for CGDCT
Evangelion for meta-commentary and deconstruction, to the point that future works that qualify often get called the “Evangelion of <genre>”
Fullmetal Alchemist Brotherhood and Attack on Titan for battle shounen
Bocchi the Rock for girls band anime, specifically
Lupin III: The Castle of Cagliostro for pretty much all of Ghibli
Akira for 90s anime


There were a lot of “stuck in a game” anime well before SAO.
Log horizon came a few years before[2 years after…]. .hack//SIGN about 10 years prior. And hell, Digimon came even before that.I don’t think Digimon quite occupies the same sphere – it’s like comparing Chronicles of Narnia to Ready Player One.
I’m not even sure how to rate the multiple .hack// series here because they were really experimental (one branch leaving half of its story in PS2 games) and AFAIK nobody was directly copying them. Meanwhile, after SAO…
I’m aware that it wasn’t the first but there’s no denying that SAO kicked off a big trend.
Also .hack//SIGN was boring af; only part worthwhile was the soundtrack.
.hack//SIGN did not age well. It got some decently positive reviews when it first aired, but was just about unwatchable when I rewatched it ten years later. But yeah, the soundtrack (early Yuki Kajiura) was always the best part.