Diablo IV's new season relives 30 years of Sanctuary

Season of Hell's Legacy has begun in Diablo IV, and it is the centrepiece of Blizzard's 30th anniversary celebration for the series. The seasonal questline walks players through a living history of Diablo's past games, recreated inside Diablo IV: Deckard Cain's lost soul returns amid the dead rising from Pandemonium, and three dark wanderers leave a trail of death in their wake.

Following them means revisiting the places the series was built on. The questline takes in the Worldstone Chamber, the Durance of Hate and the Tristram Cathedral of the original Diablo, with echoes of the Prime Evils — Mephisto, Baal and Diablo — waiting at the end of each. Collect the three Splinters of Evil and the season hands you the ability to become a dark wanderer yourself, pursuing reputation tracks of your own.

What else arrives with the season

Blizzard's season overview lists endgame updates, Legacy Uniques and a set of quality-of-life features on top of the questline, along with a Codex. Cosmetics are available through Twitch drops and Xbox Game Pass, the 3.2.1 patch notes are published, and there is a Diablo IV crossover with The Witcher 3 in the mix as well.

The anniversary framing continued at BlizzCon 2026 on 13 September, where the development team gave a What's Next panel on the season's design and philosophy. The panel also confirmed the Amazon, one of the series' most requested classes, returns in 2027 — a first look at what comes after the nostalgia run.

Why an anniversary season is a strange thing to review

Every long-running game eventually throws a party for itself, and most of them amount to a cosmetic banner and a discount. Blizzard has gone further here, rebuilding remembered locations and bosses as the actual content of a live season, which is a more interesting proposition than a museum: it only works if those memories still hold up as mechanics. The Echoes of the Prime Evils are the test. If the fights land as tribute rather than karaoke, this is the best thing the anniversary calendar could have produced; if they don't, players will simply go back to farming the seasonal track and the history lesson becomes set dressing.

Our opinion

The more revealing announcement is the Amazon. A season built from Diablo's past is a safe, well-executed play — the audience already knows it wants this. Committing a marquee class to 2027 says Blizzard intends Diablo IV to keep growing on its own terms rather than coasting on the back catalogue, and that is the detail worth holding them to. Nostalgia buys a season; new classes and new systems are what buy the next five years. Play the anniversary, but judge the studio on what it ships after the candles are blown out.