The Delirium mechanic returns in Path of Exile 2, and it’s as captivating—and challenging—as ever. The mist-cloaked encounters have evolved with even deeper mechanics, making this one of the most rewarding endgame activities available. In this guide, we’ll cover how the Delirium fog works, how to POE 2 Currency pick the right passive bonuses, and what you can expect from its lucrative rewards.

What is Delirium?
Delirium is a special endgame mechanic that distorts the world of Wraeclast with a mist-like fog. When activated, this fog intensifies enemy spawns and grants them additional abilities, making every area a dangerous test of your build and reflexes. As you move deeper into the mist, the challenge increases, but so too do the potential rewards. The fog also affects monsters and bosses in Maps, making every engagement a high-stakes endeavor.

The Delirium Fog Mechanics
Delirium begins when you touch a Mirror of Delirium found in a map. Upon activation, the area becomes shrouded in mist. The mist expands as you move, and enemy packs gain more damage, life, and special abilities. The longer you stay within the mist, the more “Delirium Stacks” you accumulate, representing the difficulty and bonuses of the encounter.

Delirium encounters operate like a race against the mist. The mist will dissipate after a certain distance, making it vital to move quickly and kill as many enemies as possible before it disappears. The more enemies you kill and the further you travel within the mist, the more reward tokens you’ll accumulate.

Each Delirium zone has its own risk-reward balance. The deeper you go, the stronger the enemies become, but also the better the loot. The mist will also drop special “Splinters” that can be combined to access even harder encounters and bosses, making it worth the effort.

Delirium Passive Tree: Specialization is Key
With Path of Exile 2, the Atlas Passive Tree allows you to customize how Delirium operates within your endgame mapping experience. By allocating points in the Atlas Passive Tree, you can:

Increase the Fog’s Duration: Stay in the mist longer to kill more enemies.

Increase Monster Quantity and Rarity: Get better drops by making foes tougher and more rewarding.

Better Reward Multiplication: Enhance the quantity and quality of Delirium-specific items.

More Splinters and Orbs: Focus your build on obtaining special splinters and crafting materials.

Passives in the tree also grant bonuses like making the mist affect bosses more severely, allowing you to reap higher rewards from endgame encounters. Investing in these nodes is ideal for dedicated “Delirium farmers” looking to monetize or upgrade their character quickly.

The Rewards of Delirium
Delirium doesn’t just make maps harder — it also delivers some of the best rewards available in Path of Exile 2. These include:

Delirium Orbs: Modify maps for higher risk and unique bonuses.

Splinters & Simulacrum Fragments: Collect enough to open the Simulacrum, an ultra-challenging endgame encounter.

Cluster Jewels: Special jewels that unlock new passive skill branches.

Currency Drops: The higher your Delirium stack, the more currency you’ll walk away with.

Specialized Rewards: Certain map areas yield unique weapons, armor, and divination cards available only in the mist.

Final Thoughts
Delirium in Path of Exile 2 is one of the most adrenaline-fueled and rewarding endgame activities. The mist mechanics test every aspect of your build, from damage and speed to survivability and precision. By utilizing the Atlas Passive Tree to optimize your Delirium encounters, and focusing on the right areas for farming, you can reap exceptional benefits. Master the mist, harness its chaos, and carve out a path to glory—and riches—in the heart of Wraeclast.

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