A young wavemaster, only known by the alias of Tsukasa, wakes up in an MMORPG called The World, with slight amnesia. He does not know what he has previously done before he woke up. In The World, he is suspected to be a hacker of the Crimson Knights, as he was seen accompanying a tweaked character in the form of a cat. Unable to log out from the game, he wanders around looking for answers, avoiding the knights and other players he meets along the way. 
As Tsukasa explores The World, he stumbles upon a magical item that takes the form of a 'guardian', which promises him protection from all harm. Subaru, the leader of the Crimson Knights, along with several other players who became acquainted with Tsukasa, set out to investigate why Tsukasa is unable to log out, and attempt to get to the bottom of the problem before it gets out of hand. 
[Written by MAL Rewrite]

After the destruction of "The World" in 2015, CC Corporation rebuilt the game using data from what was previously to be another game. "The World R:2" was then released in 2016. A newcomer to the game, Haseo, is instantly PKed and then revived by a mysterious man known as Ovan. With the problem of PKs occupying the game, Haseo soon after receives help from a female Harvest known as Shino. Amidst curiosity and confusion, Haseo is lead to joining the guild known as the Twilight Brigade. The guild that searches for the legendary object known as the "Key of the Twilight". Set before the .hack//G.U. game.

A virtual multiplayer online role-playing game exists, known as 'The World'. In 'The World', there is an event held in the Dungeon of Nankoflank that Mimiru, a character in the game, undertakes with Bear, another character of the game. Mimiru confesses to Bear that she's not doing the event for the treasures or experiences, but for the memories and experiences of when she had first started playing. The two later meet a certain character named Mimika and together, the three proceed through quests and events as Mimiru learns the meaning of the game. 
[Written by MAL Rewrite]

Somewhere in the MMORPG called &lsquo;The World&rsquo;, a group is gathered at a pub, awaiting the start of an event. There, old friends and acquaintances are reunited, including those who rarely log on. Some are even forging new relationships for the first time. Together, invited by the hacker Helba, the group leaves for the event in the Net Slums where a celebration awaits them all. 
[Written by MAL Rewrite]

As an expression of gratitude for the heroes of both the ".hack//Sign" and the ".hack" game series, Helba has prepared a special event for all the characters to find the newly established 'Twilight Hot Springs'. The characters can get their well deserved rest and relaxation by having a soak in the wonderful hot springs, but there is only one problem -- the hot springs are hidden and there have been mysterious player murders. With the only clue being the word &ldquo;GIFT&rdquo;, the race has begun to find the culprit and the location of the hot springs. 
[Written by MAL Rewrite]

The characters from previous .hack//G.U. Games and .hack//Roots receive an email from Ovan. He is requesting them to go to Hidden Forbidden Festival where is set up a mysterious summer festival. There they find an AIDA Chim Chim who wishes to peacefully co-exist with the other players of The World. It then transforms into the word "Returner", so they assume it to mean that Ovan will return to The World.
 
(Source: Anime News Network)

An animated "about 3-minutes long" history on .hack in honor of its 15th anniversary. Haseo and Kite in their chibi forms are here to explain the main story line of the multi-media franchise just in time for new viewers to get the .hack//G.U. Last Recode video game, which is a remaster of .hack//G.U. with a brand new chapter continuing the story

While playing the newly released MMORPG &lsquo;The World&rsquo;, Minase Mai and Tomonari Kasumi collapsed in the real world and were sent to the hospital after hearing a mysterious sound. Only Mai had recovered while her friend Kasumi had slipped into a mysterious coma. Mai is later approached by the creator of &lsquo;The World&rsquo;, Tokuoka Junichiro, who unveils to her that, just like her friend, six other players across the country had also collapsed while playing &lsquo;The World&rsquo; and are now in mysterious comas. What exactly is &lsquo;The World&rsquo;, what is this mysterious sound Mai keeps on hearing, and why are people slipping into comas from this game? Minase, Junichiro and their acquaintances set off to get to the bottom of this problem before any further harm happens. 
[Written by MAL Rewrite]

While the original four .hack video games followed the tales and travels of Kite, these books tell the story all over again, from the view of Akira Hayami, also known as BlackRose in The World. When her younger brother, Fumikazu, falls into a coma while playing The World, Akira decides to figure out why it happened, and launches herself into the most exciting, and dangerous, journey she will ever have to encounter. Where she meets the twin blade Kite whose friend Orca has fallen into a coma too. Together they venture to find out The World's innermost secrets meeting new friends along the way who aid them in their journey. (Source: Wikipedia)

In the epic prequel to .hack, the avatar Albireo is a solo adventurer in The World, the most advanced online fantasy game ever created. When he comes across Lycoris, a strange little girl in a dungeon, Albireo wonders if she's simply nothing more than a bug in the system. As the two journey further into The World, Albireo watches Lycoris turn all of the rules of The World upside down. Slowly, he comes to realize that she may hold a very deadly secret--a secret that could unhinge everything in cyberspace...and beyond! (Source: Amazon)

Experience the beginning of the .hack G.U series in this original manga! This manga condenses the content of the three stories leading to G.U.: .hack//SIGN, .hack, and .hack//Roots. Follow the story of a young man named Sora who later becomes the dark hero seeking revenge known as Haseo and the protagonist of G.U.
 
Notes: 
- The manga was released incrementally on Bandai Namco Entertainment's website as a part of the promotion for.hack//G.U. Last Recode's release on Nintendo Switch. 
- The physical volume of the manga came bundled with the video game, original soundtrack and an art book and released on March 11, 2022.

A novel series that tells the story of a Long Arm named Carl, of what happened to Sora after he was trapped in The World by Morganna, and of Tsukasa's real life after being able to log out from The World.

Lara Hoerwick is visiting her uncle Harald, and starts playing a game on his computer while he is away. At first she is excited to find herself in the world of the Epitaph of Twilight, until she realizes that she's stuck in the game. To make matters worse, the game's world is about to be destroyed by the Cursed Wave. Lara's only hope is to set out in search of the Twilight Dragon.
 
(Source: .hack//Wikia)

Tobias, Mary, and Sakuya challenge the impregnable "The One Sin", but they lose their way in the maze and unintentionally trap other guild members. A mysterious cat is watching their blunder. Is it another player character or NPC? 

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