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Alien Gem

An Alien Gem turns equipment into Alien-Cursed equipment, fills eligible regular-affix slots, and applies several random changes.

Use and Eligibility

Combine one affixable item and one Alien Gem in a crafting grid. Non-Cursed equipment and Rune-Cursed Weapons are eligible. Normal Cursed equipment cannot be alienated again. Alien-Cursed equipment cannot repeat the process, except a Bloodthirst Rune-Cursed Weapon with remaining Alienations.

Guaranteed Changes

  • Quality becomes Cursed and the name gains the Alien prefix.
  • Durability is fully restored.
  • Existing regular, Rune fixed, Sealed, and T0 affixes remain.
  • The existing negative curse is removed; the Alien changes may add another.
  • A Bloodthirst weapon consumes one remaining Alienation.

Regular-Affix Fill

When used on Common, Magic, or Rare equipment, the gem first fills regular affixes: 0–2 existing affixes become 3; 3–4 become 5; equipment with 5 or more gains one, up to its limit. Legendary equipment and Rune-Cursed Weapons eligible for another Alienation skip this step.

Random Changes

A standard Alienation then makes 1–5 rolls. Each roll chooses equally among changes that the item can receive:

Change Result
Replace affix Removes one random regular affix and rolls a compatible replacement
Add negative curse Adds one compatible negative curse if none exists
Add regular affix Adds one compatible regular affix if below the limit
Change Tier Changes one regular affix to a different non-T0 Tier
Reroll value Rerolls one regular affix inside its existing Tier
Add T0 Adds one eligible Alien T0 if the item has none
Add maximum T2 Adds one extra compatible Sealed Affix at maximum-value T2; at most once per Alienation
Distort highest Tier Multiplies one highest-Tier regular affix by 0.8–1.5
Empower Infusion Multiplies an existing Infusion Affix by 1.2–1.5

Distortion can reduce the selected affix to 80% of its former value. If the distorted regular affix crosses beyond the T1 maximum into T0, its value is normalized to that affix's fixed regular-T0 value.

Weapon T0 Affixes

Affix Effect Requirement
Unbreakable No durability loss None
All Damage +25% All Damage None
Lightning on Hit Additional lightning strike on hit Existing Lightning affix
Explosion on Hit Fire explosion on hit Existing Fire affix
Ignore Armor Physical attacks use an ignore-armor calculation None
Keep on Death The item is retained on player death None

Armor T0 Affixes

Affix Effect
Unbreakable No durability loss
All Damage Reduction 20% less incoming damage
Regeneration per 5s Restores 1 health every 5 seconds
Keep on Death The item is retained on player death

Negative-curse ranges are listed under Cursed Equipment.

Celestial Alien Gem

A Celestial Alien Gem uses the same regular-affix fill and then makes 4–6 random-change rolls.

Generated Alien Equipment

Some Cursed equipment from monsters, chests, or fishing has a 10% chance to become Alien immediately and receive 1–5 random changes.