The BEST episodes of Sword Art Online season 4

Every episode of Sword Art Online season 4, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Sword Art Online season 4!

In the near future, a Virtual Reality Massive Multiplayer Online Role-Playing Game (VRMMORPG) called Sword Art Online has been released where players control their avatars with their bodies using a piece of technology called Nerve Gear. One day, players discover they cannot log out, as the game creator is holding them captive unless they reach the 100th floor of the game's tower and defeat the final boss. However, if they die in the game, they die in real life. Their struggle for survival starts now...

Last Updated: 9/18/2024Network: Tokyo MXStatus: Ended
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Ray of Light
star
7.96
191 votes

#1 - Ray of Light

Season 4 - Episode 12 - Aired 12/29/2019

Due to Gabriel's scheme, U.S. players were given black knight accounts, and are now continuously logging in to the Underworld. They begin mercilessly slaughtering soldiers from both the Human Empire Army and the Dark Territory Army.

Watch Now:Amazon
Awakening
star
7.95
172 votes

#2 - Awakening

Season 4 - Episode 19 - Aired 8/23/2020

Escaping his nightmares, Kirito regains consciousness at last. With the Night-Sky Blade in his right hand and the broken Blue Rose Sword in his left, he faces off against Vassago, armed with the Mate-Chopper, now enormous in size.

Watch Now:Amazon
The Night-Sky Blade
star
7.94
181 votes

#3 - The Night-Sky Blade

Season 4 - Episode 20 - Aired 8/30/2020

Alice and Asuna head to the World’s End Altar as Kirito confronts Gabriel. Unless he can defeat Gabriel and return to the real world before the maximum-acceleration phase begins, Kirito will have to spend the next 200 years in the Underworld.

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End to Eternity
star
7.94
172 votes

#4 - End to Eternity

Season 4 - Episode 14 - Aired 7/19/2020

Despite its modest size, the Human Empire Army and Asuna valiantly battle the wave of American players surging towards them. But they’re hopelessly outnumbered, and the Human Empire soldiers start to fall one after another.

Watch Now:Amazon
Sword and Fist
star
7.91
192 votes

#5 - Sword and Fist

Season 4 - Episode 9 - Aired 12/8/2019

Upon seeing Alice, Gabriel orders his entire army to capture her. The pugilists guild races ahead of the main force. As Alice and Bercouli try to come up with a strategy to counter them, the silent Integrity Knight Sheyta Synthesis Twelve steps forward.

Watch Now:Amazon
Battle of the Knights
star
7.90
189 votes

#6 - Battle of the Knights

Season 4 - Episode 6 - Aired 11/17/2019

The Final Load Test has begun, and the Eastern Gate has collapsed. Incited by Gabriel, now Emperor Vecta, the massive army of the land of darkness pushes on towards the Human Empire.

Watch Now:Amazon
Blood and Life
star
7.86
183 votes

#7 - Blood and Life

Season 4 - Episode 8 - Aired 12/1/2019

The powerful formal art unleashed by the Integrity Knight Alice inflicts severe casualties on the forces of darkness. Alice encounters an enemy survivor and learns that Emperor Vecta's objective is to find the “Priestess of Light.”

Watch Now:Amazon
Memories
star
7.82
170 votes

#8 - Memories

Season 4 - Episode 18 - Aired 8/16/2020

Sinon manages to severely damage Gabriel, but her strength has been sapped. Leafa collapses after wiping out the American players. And Asuna, her situation now hopeless, gazes at Kirito. But the Black Swordsman continues to wander through his dreams.

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New World
star
7.80
179 votes

#9 - New World

Season 4 - Episode 23 - Aired 9/20/2020

Rinko informs Kazuto that Alice is missing. He’s about to rush to the Rath Roppongi branch when the doorbell rings. In a panic, Kazuto throws open the door, only to find a deliveryman there with a huge cardboard box.

Watch Now:AmazonApple TV
The War of Underworld
star
7.78
185 votes

#10 - The War of Underworld

Season 4 - Episode 13 - Aired 7/12/2020

Sinon has logged in with the super-account of Solus, the Sun Goddess and rescues Asuna and the others at the last minute. Meanwhile, Leafa logs in with the super-account of Terraria, the Earth Goddess, and descends to the Underworld.

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Stigma of the Disqualified
star
7.78
186 votes

#11 - Stigma of the Disqualified

Season 4 - Episode 7 - Aired 11/24/2019

Integrity Knight Renly Synthesis Twenty-Seven, in battle for the first time, flees his position, allowing goblins from the forces of darkness to infiltrate to the tent where Kirito is.

Watch Now:Amazon
Alice
star
7.68
166 votes

#12 - Alice

Season 4 - Episode 22 - Aired 9/13/2020

The “Rath Attack Incident,” masterminded by the American National Security Agency, is over. Now head of the newly formed Oceanic Resource Exploration & Research Institution, Rinko unveils Alice to the world as an authentic artificial general intelligence.

Watch Now:AmazonApple TV
Stacia, the Goddess of Creation
star
7.66
178 votes

#13 - Stacia, the Goddess of Creation

Season 4 - Episode 10 - Aired 12/15/2019

Asuna has logged into the Underworld using the superuser account of Stacia, the Goddess of Creation. After she descends, she is reunited with Kirito, thanks to Ronie and Tiese. But soon Alice arrives, leading to a precarious situation!

Watch Now:Amazon
Raids
star
7.60
206 votes

#14 - Raids

Season 4 - Episode 2 - Aired 10/20/2019

A force from the Dark Territory is attacking Rulid Village. Though she’d lost her purpose in battle, in order to fight for her family, and for the people that Kirito and Eugeo tried to protect, Alice takes up the Osmanthus Blade once again!

Watch Now:Amazon
Heartless Choice
star
7.55
182 votes

#15 - Heartless Choice

Season 4 - Episode 11 - Aired 12/22/2019

Asuna has created a bottomless chasm. The dark knights and the pugilists attempt to cross over to the other side, where the Human Empire Army waits. Meanwhile, Critter releases an announcement about a limited-time beta test for a bizarre new VRMMO.

Watch Now:Amazon
Instigation
star
7.54
162 votes

#16 - Instigation

Season 4 - Episode 15 - Aired 7/26/2020

Bercouli pursues Vecta, who’s abducted Alice. After a long, vicious battle, Bercouli unleashes his secret sword skill, Uragiri, and finally defeats Vecta, despite having sustained severe injuries himself.

Watch Now:Amazon
The Night Before Battle
star
7.53
192 votes

#17 - The Night Before Battle

Season 4 - Episode 5 - Aired 11/10/2019

Resolved to fight for humankind, Alice joins the forces of the Human Empire, bringing Kirito with her. But while the forces of darkness boast overwhelming numbers, only thirteen Integrity Knights are available to fight for the Human Empire.

Watch Now:Amazon
Prince of Hell
star
7.52
161 votes

#18 - Prince of Hell

Season 4 - Episode 17 - Aired 8/9/2020

Asuna and the others succumb to Vassago and the Chinese/Korean players. Discovering the catatonic Kirito, Vassago kicks his wheelchair over. Enraged, Klein lunges at Vassago, only to be pinned down by enemy players. Just then, someone unexpected appears.

Watch Now:Amazon
Dark Territory
star
7.47
190 votes

#19 - Dark Territory

Season 4 - Episode 4 - Aired 11/3/2019

Shasta, commander of the Dark Territory’s dark knights, had intended to use Administrator’s death as a chance for peace with the Human Empire. But his plans are thwarted by Emperor Vecta’s return to the land of darkness.

Watch Now:Amazon
Beyond Time
star
7.42
170 votes

#20 - Beyond Time

Season 4 - Episode 21 - Aired 9/6/2020

The maximum-acceleration phase has begun. Alice successfully logs out of the Underworld, but Kirito doesn’t make it in time. In the real world, Higa and Kikuoka rush to shut down the STL, in order to disable the maximum-acceleration phase, but…

Watch Now:AmazonApple TV
The Final Load Test
star
7.42
189 votes

#21 - The Final Load Test

Season 4 - Episode 3 - Aired 10/27/2019

The mysterious group that attacked the Ocean Turtle turns out to be a secret unit under orders from the U.S. National Security Agency. And its leader, Gabriel, has battled Kirito and Sinon before.

Watch Now:Amazon
In the Far North
star
7.33
219 votes

#22 - In the Far North

Season 4 - Episode 1 - Aired 10/13/2019

Six months have passed since the fierce battle against Administrator. Alice has brought Kirito to her childhood home, Rulid Village, where they live peacefully. Gazing out at the world that she saved with Kirito, Alice reflects on all that’s happened.

Watch Now:Amazon
Code 871
star
7.24
163 votes

#23 - Code 871

Season 4 - Episode 16 - Aired 8/2/2020

The traitor inside Rath turns out to be a researcher named Yanai. When Higa attempts to restore Kirito, Yanai tries to thwart the operation by holding him at gunpoint. Meanwhile, in the Underworld, Sinon confronts Gabriel, who has logged back in.

Watch Now:Amazon