In honor of Diablo’s 20th anniversary, every Blizzard game is getting a little something to celebrate

In the case of Diablo 3, it's a big something

It's hard to believe that 1996 was 20 years ago, but as they say, "time flies" and with that Diablo is about to turn 20 years old later this week on December 31st. As one of Blizzard's biggest franchises, the company is naturally planning to celebrate and will release something on every one of their games to commemorate the event.

Here's a list of what's coming per Blizzard.

Diablo III:
 
Recapture the feeling of your first play through of the original Diablo with The Darkening of Tristram tribute event. Venture through a reimagined version of the original cathedral in Diablo III and keep an eye out for some familiar items.
 
Heroes of the Storm:
 
The battle for the High Heavens continues, and a new Diablo-themed portrait is up for grabs! Can you emerge victorious on this hectic new brawl map?
 
Hearthstone:
 
In this Tavern Brawl, a hooded stranger awaits, holding a grim deck in his hands. Will you unravel the secrets surrounding this dark wanderer?
 
Overwatch:
 
Bring the battle for Sanctuary into the fight for the future with in-game sprays representing your favorite Diablo III classes—along with a new player icon modeled after the Lord of Terror!
 
StarCraft II:
 
Put the Lord of Terror to work for you with a Diablo-themed worker portrait.
 
World of Warcraft:
 
Strange things are afoot in the world of Azeroth as denizens of Sanctuary cross over into an unfamiliar world.
Most of these descriptions are rather vague, except of course for Diablo III's The Darkening of Tristram event, which was revealed back at BlizzCon 2016. The event is a 16 level dungeon that includes all four original main bosses from the first game and has a graphics filter that makes the game look more pixelated. Many of the other games appear to be getting mostly cosmetic stuff, but Diablo III is going all out. As well it should be.
 
Source: [Blizzard]