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Diablo 4: What are Nightmare Dungeons?
For a while, your main source of Sigils will be Nightmare Dungeons themselves.

Entrances to Nightmare Dungeons have a distinct red haze.
In the table below, we’ve listed the crafting costs for each range of Nightmare Sigil Tiers.
Can I upgrade Nightmare Sigils?
At the moment, though, it’s not possible to upgrade your Nightmare Sigils.

Entrances to Nightmare Dungeons have a distinct red haze.
This includes both positive and negative affixes.
The higher the Nightmare Dungeon’s Tier is, the more Glyph XP you’ll get at the end.
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Entrances to Nightmare Dungeons have a distinct red haze.


Eventually, you can craft Nightmare Sigils at Occultist vendors.

As you climb through the Nightmare Dungeon Tiers, you’ll face tougher high-level enemies.

Nightmare Portal is an affix that periodically spawns in extra monsters for you to deal with.

The Glyph XP obtained from Nightmare Dungeons is very important for endgame progression.




















