Fork is a behavior of projectiles that causes them to split into two identical projectiles when they hit a target.
Mechanics[ | ]
When a projectile forks, it splits into two identical projectiles that continue travelling at 60 and -60 degree angles from the projectile's original trajectory. A projectile can only fork once unless it is supported by the awakened fork support gem.
Only one projectile behavior can be applied each time a projectile hits a target. Fork has second priority for projectile behaviors, preceded by #1 pierce, and then followed by #3 chain and #4 return. This means that if you had pierce, chain, and fork supporting the same skill, it would first pierce to it's maximum number of pierces, then fork, then chain to its maximum number of chains.
Projectiles apply their on-hit effects to each target they fork on or otherwise hit. For example, 
Essence DrainEssence DrainSpell, Projectile, Duration, Chaos, AoE
Level: (1-20)
Cost: (8-23) Mana
Cast Time: 0.70 sec
Critical Strike Chance: 5.00%
Effectiveness of Added Damage: 60%Requires Level 12Fires a projectile that applies a damage over time debuff when it hits. You are healed for a portion of the debuff damage. The debuff is spread by Contagion.Per 1% Quality:1Superior2Anomalous3Divergent1% increased Chaos DamageRegenerate 0.01% of Debuff Damage as Life5% increased Damage with HitsDeals (31.2-1503.2) Base Chaos Damage per second
Regenerate 0.5% of Debuff Damage as Life
Base duration is 3.8 seconds
Deals (9-433) to (14-649) Chaos Damage
Modifiers to Spell Damage apply to this Skill's Damage Over Time effectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
will apply its debuff to each target a projectile hits. Skills such as 
Ice ShotIce ShotAttack, Projectile, AoE, Cold, Bow
Level: (1-20)
Cost: (6-10) Mana
Attack Damage: (130-174)% of base
Effectiveness of Added Damage: (130-174)%
Projectile Speed: 3260
Radius: 23 / 10Fires an arrow that converts some physical damage to cold on its target and converts all physical damage to cold in a cone behind that target.Per 1% Quality:1Superior2Anomalous3Divergent1% increased Cold Damage0.5% increased Area of Effect1% of Physical Damage Converted to Cold DamageDeals (130-174)% of Base Attack Damage
60% of Physical Damage Converted to Cold Damage
(2-75) to (3-113) Added Cold Damage
Chills Enemies as though dealing (100-195)% more Damage
(0-19)% increased Effect of Cold AilmentsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
and 
Kinetic BlastKinetic BlastAttack, Projectile, AoE
Level: (1-20)
Cost: (15-16) Mana
Attack Damage: (140-155)% of base
Effectiveness of Added Damage: (140-155)%
Radius: 14Requires Level 28Fires a projectile from a Wand that causes a series of small explosions surrounding its point of impact, each damaging enemies caught in the area.Per 1% Quality:1Superior2Anomalous3Divergent0.5% increased Area of EffectProjectiles Pierce 0.1 additional TargetsProjectiles gain 1.5% increased Area of Effect after ForkingDeals (140-155)% of Base Attack Damage
Creates 4 explosions
35% less Area Damage
(0-19)% increased Area of EffectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
apply their on-hit area damage effects each time a projectile hits a target. The explosion behavior of some projectiles, such as 
FireballFireballProjectile, Spell, AoE, Fire
Level: (1-20)
Cost: (6-25) Mana
Cast Time: 0.75 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 240%
Projectile Speed: 1040
Radius: 9Unleashes a ball of fire towards a target which explodes, damaging nearby foes.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal1% increased Projectile Speed2% reduced Projectile Speed
3% increased Area of Effect3% increased Effect of non-Damaging Ailments on Enemies
-2% more Damage with Ignite0.25% chance to Debilitate Enemies for 1 second on HitDeals (9-1095) to (14-1643) Fire Damage
(20-39)% chance to Ignite enemies
Projectiles gain Radius as they travel farther, up to +(0-9) RadiusPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
and 
Creeping FrostCreeping FrostSpell, Projectile, Duration, AoE, Cold
Level: (1-20)
Cost: (7-20) Mana
Soul Gain Prevention: 0 sec
Cast Time: 0.60 sec
Critical Strike Chance: 6.00%
Effectiveness of Added Damage: 80%
Projectile Speed: 844
Radius: 12Requires Level 12Fire an icy projectile that bursts on impact or when reaching the targeted area, dealing area damage and creating a chilling area that deals cold damage over time. This area will creep across the ground towards nearby enemies until its duration expires.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal0.5% increased Area of Effect1% increased Skill Effect DurationFires an additional ProjectileChilling Area has 2% increased Movement SpeedBase duration is 5 seconds
Deals (11-383) to (16-572) Cold Damage
Can have up to 10 Chilling Areas
Deals (16.7-1391.2) Base Cold Damage per second
Modifiers to Spell Damage apply to this Skill's Damage Over Time effectPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
, is not an on-hit effect and occurs only when a projectile ceases to exist.
Skill gems[ | ]
Active skill gems[ | ]
| Skill gem |  |  |  |  |
|---|---|---|---|---|
 Kinetic BoltKinetic BoltAttack, ProjectileLevel: (1-20) Cost: (6-10) Mana Attack Damage: (140-175)% of base Effectiveness of Added Damage: (140-175)%Fire a projectile from your wand that changes direction in a zig-zag pattern at regular intervals or when hitting enemies. Each time it changes direction, a secondary projectile breaks off, flying in the direction it changed away from.Per 1% Quality:1Superior2Anomalous3Divergent1% increased Projectile SpeedIncreases and Reductions to Cast Speed apply to Attack Speed at 2.5% of their value+0.1 Mana gained for each Enemy hitDeals (140-175)% of Base Attack Damage Projectile changes direction (5-8) times Increases and Reductions to Spell Damage also apply to Attack Damage from this Skill at 200% of their value Modifiers which would cause projectiles to Fork instead cause them to change direction additional timesPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.   | N/A | N/A |  | 1 |
Support skill gems[ | ]
| Skill gem | | | | |
|---|---|---|---|---|
 Awakened Fork SupportAwakened Fork SupportSupport, ProjectileIcon: Y Level: (1-5) Cost & Reservation Multiplier: 140%Requires Level 72Supports projectile skills, making their projectiles fork into two projectiles the first two times they hit an enemy and don't pierce it.Per 1% Quality:1SuperiorSupported Skills deal 0.5% increased Projectile DamageProjectiles from Supported Skills Fork an additional Time Projectiles from Supported Skills Fork Supported Skills deal (0-9)% more Projectile DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.  | N/A | | N/A | 72 |
 Fork SupportFork SupportSupport, ProjectileIcon: Y Level: (1-20) Cost & Reservation Multiplier: 130%Requires Level 31Supports projectile skills, making their projectiles fork into two projectiles the first time they hit an enemy and don't pierce it.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Projectile DamageProjectiles from Supported Skills have 1% chance for an additional Projectile when ForkingProjectiles from Supported Skills Pierce an additional TargetSupported Skills deal (-10-9)% more Projectile Damage Projectiles from Supported Skills ForkThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket.  | N/A | | N/A | 31 |
Unique items[ | ]
The following unique items are related to fork:
| Item | Base Item | | Stats | ||
|---|---|---|---|---|---|
Replica Infractem Replica InfractemDecimation BowBow Quality: +20% Physical Damage: (128.8-161.7) to (269.1-308.7) Critical Strike Chance: (6.50%-7.50%) Attacks per Second: 1.20 Weapon Range: 120Requires Level 53, 170 Dex(30-50)% increased Critical Strike Chance+(20-30) to Dexterity (110-125)% increased Physical Damage Adds (25-35) to (36-45) Physical Damage 10% increased Movement Speed +(350-400) to Accuracy Rating Cannot Leech Life Projectiles from Attacks Fork Projectiles from Attacks Fork an additional timeHow did you manage to lodge arrows in every single test subject and researcher in Lab Three simultaneously... again?" - Doctor Bircus  | Decimation Bow | 53 | (30-50)% increased Critical Strike Chance+(20-30) to Dexterity (110-125)% increased Physical Damage Adds (25-35) to (36-45) Physical Damage 10% increased Movement Speed +(350-400) to Accuracy Rating Cannot Leech Life Projectiles from Attacks Fork Projectiles from Attacks Fork an additional time | ||
Rigwald's Quills Rigwald's QuillsTwo-Point Arrow QuiverRequires Level 56(20-30)% increased Global Accuracy Rating-10% to Fire Resistance +(20-30)% to Lightning Resistance +7 Life gained for each Enemy hit by your Attacks 20% reduced Projectile Speed (30-50)% increased Projectile Damage Projectiles ForkThe fortunate inscribe their legacy in the pages of history books. The rest of us must leave our mark with our blood or the blood of others.  | Two-Point Arrow Quiver | 56 | (20-30)% increased Global Accuracy Rating-10% to Fire Resistance +(20-30)% to Lightning Resistance +7 Life gained for each Enemy hit by your Attacks 20% reduced Projectile Speed (30-50)% increased Projectile Damage Projectiles Fork | ||
Reach of the Council Reach of the CouncilSpine BowBow Quality: +20% Physical Damage: (69.7-109.2) to (251.6-337.35) Critical Strike Chance: 6.50% Attacks per Second: (1.51-1.57) Weapon Range: 120Requires Level 64, 212 DexSocketed Gems are Supported by Level 20 Greater Volley (50-75)% increased Physical Damage Adds (15-30) to (70-95) Physical Damage (8-12)% increased Attack Speed 20% reduced Projectile Speed Arrows fired from the first firing points always Pierce Arrows fired from the second firing points Fork Arrows fired from the third firing points Return to you Arrows fired from the fourth firing points Chain +2 timesWe stand together. We strike together.  | Spine Bow | 64 | Socketed Gems are Supported by Level 20 Greater Volley (50-75)% increased Physical Damage Adds (15-30) to (70-95) Physical Damage (8-12)% increased Attack Speed 20% reduced Projectile Speed Arrows fired from the first firing points always Pierce Arrows fired from the second firing points Fork Arrows fired from the third firing points Return to you Arrows fired from the fourth firing points Chain +2 times | ||
Slivertongue SlivertongueHarbinger BowBow Quality: +20% Physical Damage: (174-192) to (404.4-428.4) Critical Strike Chance: (6.50%-7.50%) Attacks per Second: 1.20 Weapon Range: 120Requires Level 68, 212 Dex(30-50)% increased Critical Strike ChanceAdds (110-125) to (245-265) Physical Damage (150-200)% increased Critical Strike Chance with arrows that Fork Arrows Pierce all Targets after Forking Arrows that Pierce have +50% to Critical Strike MultiplierA hundred blind heads, each seeking the taste of prey on the air.  | Harbinger Bow | 68 | (30-50)% increased Critical Strike ChanceAdds (110-125) to (245-265) Physical Damage (150-200)% increased Critical Strike Chance with arrows that Fork Arrows Pierce all Targets after Forking Arrows that Pierce have +50% to Critical Strike Multiplier | ||
Snakepit SnakepitSapphire RingRequires Level 68+(20-30)% to Cold Resistance(20-40)% increased Spell Damage (5-10)% increased Cast Speed Left ring slot: Projectiles from Spells cannot Chain Left ring slot: Projectiles from Spells Fork Right ring slot: Projectiles from Spells Chain +1 times Right ring slot: Projectiles from Spells cannot Fork Projectiles from Spells cannot PierceThey wrap around you until your blood turns as cold as theirs.  | Sapphire Ring | 68 | +(20-30)% to Cold Resistance(20-40)% increased Spell Damage (5-10)% increased Cast Speed Left ring slot: Projectiles from Spells cannot Chain Left ring slot: Projectiles from Spells Fork Right ring slot: Projectiles from Spells Chain +1 times Right ring slot: Projectiles from Spells cannot Fork Projectiles from Spells cannot Pierce | ||
The Hungry Loop The Hungry LoopUnset RingRequires Level 70Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems <Consumed support gem modifier>Be careful where you put your finger.  | Unset Ring | 70 | Has 1 SocketConsumes Socketed Uncorrupted Support Gems when they reach Maximum Level Can Consume 4 Uncorrupted Support Gems Has not Consumed any Gems
|
Passive skills[ | ]
Base passive skills[ | ]
The following passive skills are related to fork:
| Name | Stats |
|---|---|
Projectile Damage and Chance for Extra Fork Projectile | Projectiles have 10% chance for an additional Projectile when Forking 10% increased Projectile Damage [1] |
| Projectile Damage and Forking Angle | 50% reduced Projectile Fork angle 10% increased Projectile Damage [1] 50% increased Projectile Fork angle 10% increased Projectile Damage [2] |
Split Shot | Projectiles have 50% chance for an additional Projectile when Forking [1] |
Cluster Jewel keystone passive skills[ | ]
The following Cluster Jewel keystone passive skills are related to fork:
| Name | Stats |
|---|---|
Kineticism | Attack Projectiles always inflict Bleeding and Maim, and Knock Back Enemies Projectiles cannot Pierce, Fork or Chain [1] |