Risk of Rain 2 Wiki
Alien Head
Reduces cooldowns for your skills.
Reduce skill cooldowns by 25% (+25% per stack).
Rarity Legendary
Category Utility
Stats
Stat Value Stack Add
Cooldown 25% Exponential +25%
Internal
Name AlienHead

The Alien Head is a returning item in Risk of Rain 2.

A player holding the Alien Head has all their skill cooldowns reduced by 25% (+25% per stack).

Notes[]

  • The cooldown reduction from the Alien Head is calculated before the flat reduction from the PurityPurity
    Reduce your skill cooldowns by 2 seconds. You are unlucky.

    All skill cooldowns are reduced by 2 (+1 per stack) seconds. All random effects are rolled +1 (+1 per stack) times for an unfavorable outcome.
    . For instance, if a player holds 1 Alien Head and 1 Purity, a skill that would normally take 4 seconds to cool down would instead have a 1 second cooldown (-1 second from the Alien Head, then -2 seconds from the Purity).

Math[]

The skill cooldown is determined by the formula cooldown ⋅ 0.75 ^ amount

Amount 2s 3s 4s 5s 6s 7s 8s 10s 12s % reduction
1 1.5 2.25 3 3.75 4.5 5.25 6 7.5 9 25%
2 1.13 1.69 2.25 2.81 3.38 3.94 4.5 5.63 6.75 43.8%
3 0.84 1.27 1.69 2.11 2.53 2.95 3.38 4.22 5.06 57.8%
4 0.63 0.95 1.27 1.58 1.9 2.21 2.53 3.16 3.8 68.4%
5 0.5 0.71 0.95 1.19 1.42 1.66 1.9 2.37 2.85 76.3%
6 0.5 0.53 0.71 0.89 1.07 1.25 1.42 1.78 2.14 82.2%
7 0.5 0.5 0.53 0.67 0.8 0.93 1.07 1.33 1.6 86.7%
8 0.5 0.5 0.5 0.5 0.6 0.7 0.8 1 1.2 90%
9 0.5 0.5 0.5 0.5 0.5 0.53 0.6 0.75 0.9 92.5%
10 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.56 0.68 94.4%
  • The cooldown reduction cannot reduce skills' cooldowns below 0.5s.

Graph[]

The following graph shows the effect on a 10 second cooldown.

Lore[]

Order: "Alien Head"
Tracking Number: 76******
Estimated Delivery: 07/13/2056
Shipping Method:  High Priority/Biological
Shipping Address: Solomon, ???, Backwaters, Mars
Shipping Details:

Important sign from the spirits. Passed down for many generations. Must be used for high noon ritual to ward off sickness and fatigue. Must be kept cool or will rot. Helps energize the kinfolk and can be used for extra human strength and agility. Important.

Version History[]

Anniversary Update
  • Bug Fixes
    • Fixed Alien Head particles not being affected by invisibility