Diablo 4 Nightmare Dungeons - How to unlock and what they do (Season 1)


The demon in Diablo 4.
July 6, 2023: Diablo 4 Season 1 will be out soon, so read up on everything you need to know about Nightmare Dungeons!

Let’s take a closer look at the Diablo 4 Nightmare Dungeons. In Diablo 4, the developers have introduced new mechanics, including tougher enemies and more valuable rewards.

Today we are going to tell you how to unlock these dungeons, and what you will encounter there. Also, we will discuss the most valuable rewards you can get from the Nightmare Dungeons.

What are Nightmare Dungeons in Diablo 4? (Season 1)

Nightmare Dungeons in Diablo 4 are modified versions of standard dungeons. It is reported that the game has around 150 of them. In order to access one of these dungeons, you will need to clear a certain stronghold.

If you want to turn a Dungeon into a Nightmare Dungeon, you’ll have to get a Nightmare Sigil. Each of them is bound to a specific Dungeon, which can modify it in a certain way.

The character is somewhere in the dark forest in Diablo 4.
click to enlarge

What are the Nightmare Dungeon rewards in Diablo 4?

There are many interesting items you can get from Nightmare Dungeons, such as Potions, Magic Gear, and more. However, the most important reward is probably Glyphs. These special runes are crucial for Paragon Boards, and help you to progress through them.

What are Nightmare Sigils in Diablo 4 and how to get them

According to the information we have so far, Nightmare Sigils in Diablo 4 are special keys you can use before you enter a certain dungeon. If you activate it, you’ll add special modifiers and make all the monsters inside stronger, converting a regular dungeon to a Nightmare Dungeon. Also, you’ll get an increased chance of finding better loot.

You can get Nightmare Sigils from an NPC called the Occultist. This character specialises in producing sigils and salvaging them. So, if you want to get rid of some Nightmare Sigilis and craft other ones, then you should go to him. Here is the list of his offerings:

Sigil Type
Sigil Tier
Sigil Cost
Common Sigil
Tier 1-5
x4 Sigil Powder, x4,000 Gold
Common Sigil
Tier 6-10
x6 Sigil Powder, x6,000 Gold
Sacred Sigil
Tier 11-15
x13 Sigil Powder, x8,000 Gold
Sacred Sigil
Tier 16-20
x18 Sigil Powder, x10,000 Gold
Ancestral Sigil
Tier 21-25
x23 Sigil Powder, x13,000 Gold
Ancestral Sigil
Tier 26-30
x28 Sigil Powder, x16,000 Gold
Ancestral Sigil
Tier 31-35
x34 Sigil Powder, x19,000 Gold
Ancestral Sigil
Tier 36-40
x40 Sigil Powder, x22,000 Gold
Ancestral Sigil
Tier 41-50
x50 Sigil Powder, x26,000 Gold
Ancestral Sigil
Tier 51-60
x60 Sigil Powder, x30,000 Gold
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These new Nightmare Dungeons look interesting, and we’re curious to see what kind of modifiers and their combinations can be encountered there. They add replayability to the standard dungeons and make the endgame more diverse!

While you are here, make sure to check our guide on whether you can play the upcoming Diablo 4 offline. We've also got a guide on whether there is an auction house in Diablo 4.

If you are looking for more information about this game, make sure to check our Diablo 4 multiplayer guide. Also, we've got a Diablo 4 class guide, as well as a Diablo 4 PvP guide.

For more articles like this, take a look at our Guides and Diablo 4 page.