Eras of .hack

As .hack is a large multimedia franchise consisting of games, anime, manga novels, audio dramas, card games, soundtracks, info books, and magazines, fans and producers have divied up the entirety of the series into eras, or "seasons."

The 1st Season (.hack)
The first era is generally defined by the use of the original version of The World as a setting. Recurring defining terms of this era include, but are not restrained to: AIs, petty hackers, data corruption, Morganna Mode Gone and The World's final puzzle.

Media

 * Games
 * frägment
 * MOBILE
 * SIGN
 * Liminality
 * GIFT
 * Legend of the Twilight
 * AI buster
 * AI buster 2
 * Another Birth
 * ZERO
 * Rena Special Pack
 * XXXX
 * ENEMY
 * Chat
 * Let's Meet Offline
 * Unison
 * Intermezzo

The 2nd Season (G.U.)
The second era was launched as "Project G.U.," and it takes place within and around The World R:2. Recurring defining terms include but are not limited to: Chosen Ones, repressed memories of personas, heavy Player Killing, the Sea of Data, Tri-Edge, violent AIs, willing and unwilling subjectation (as seen in Moon Tree and in AIDA, respectively), and secrecy.

Media

 * G.U. Games
 * Online Jack
 * Roots
 * Returner
 * TRILOGY
 * CELL
 * G.U. Novels
 * Alcor
 * GnU
 * G.U.+
 * Card Battle
 * First Login

The 3rd Season (Link ~ Versus)
This is the final era of .hack.

Media

 * Epitaph of Twilight
 * Legacy
 * LINK Twilight Knights
 * Link
 * ChupChopCase (Told through Link)
 * X'over (Told through Link)
 * ZERO (Told through Link)
 * XXXX (Told through Link)
 * G.U. Trilogy (Told through Link)
 * GnU (Told through Link)
 * SIGN (Told through Link)
 * GIFT (Told through Link)
 * Legend of the Twilight (Told through Link)
 * AI buster (Told through Link)
 * Another Birth (Told through Link)
 * CELL (Told through Link)
 * G.U. Novels (Told through Link)
 * Alcor (Told through Link)
 * GnU (Told through Link)
 * G.U.+ (Told through Link)
 * Roots (Told through Link)
 * Returner (Told through Link)
 * G.U. Games (Told through Link)
 * Unison (Told through Link)
 * After 2021
 * Quantum Introduction
 * Quantum
 * Quantum Twin Hearts
 * Bullet
 * Beyond the World
 * Beyond the World: SORA
 * Versus
 * Guilty Dragon
 * New World