Horadric Strongrooms are one of the big new features in Diablo IV Season 9. Hidden deep inside Nightmare Dungeons, they are like mini bonus dungeons packed with dangerous enemies, incredible loot, and seasonal specific rewards.
Inside, you will fight waves of enemies, activate cursed statues, and battle a boss at the end, all while under a strict time limit. It’s hectic, rewarding, and honestly one of the best parts of the seasonal grind now that Blizzard modified the rewards!
For an in-depth look at the Horadric Strongrooms and how they work exactly, you can check out our guide:
Horadric Strongrooms in Diablo 4But since Strongrooms are randomly hidden, how do you actually find more of them? Let’s break it down.
How to Increase Your Chance of Finding Strongrooms

There are two main ways to boost your odds of running into a Horadric Strongroom inside a Nightmare Dungeon:
- Use Sigils With Strongroom Affixes
- This is by far the best method.
- Some Nightmare Dungeon Sigils come with a special affix that guarantees a Horadric Strongroom will appear inside the dungeon. These Sigils are random, so keep an eye out for them in your inventory or craft more with the Occultist until you get lucky.
We also recommend you sort your Sigils and look for one with “contains a Horadric Strongroom” in the text. This makes it easier to keep track of them in your inventory/stash.
- Increase Your Nightmare Dungeon Tier
- Higher difficulty = better chances. You will have more chances of encountering Strongrooms once you hit Torment tiers.
Running higher-tier Nightmare Dungeons improves your chances of triggering a Strongroom even without the guaranteed affix. While it does not promise a Strongroom every time, it does increase the odds in your favor the more you push higher Torment levels.