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The Ninja perk grants you the power of the fabled shadow warriors. When attacking, you gain a +15% critical chance on all Melee and Unarmed attacks. Additionally, Sneak attack criticals do 25% more damage than normal.— Fallout 3 in-game description

Ninja is a perk in Fallout 3, Fallout: New Vegas, Fallout 4 and Fallout 76.

Fallout 3 and Fallout: New Vegas

When attacking, one gains a +15% critical chance on all Melee and Unarmed attacks. Also, Sneak attack criticals do 25% more damage than normal.


  • To attain this perk, only an 80 Melee Weapons skill is required, even though the perk affects the critical bonus and sneak damage of both Unarmed and Melee Weapons.
  • In both games, the extra 25% sneak attack critical damage only applies to melee and unarmed attacks.

Fallout 4

Trained as a shadow warrior, your ranged sneak attacks do 2.5x normal damage and your melee attacks do 4x normal damage.— Rank 1 description
Rank Requirements Description Base ID
1 AGI 7 Trained as a shadow warrior, your ranged sneak attacks do 2.5x normal damage and your melee sneak attacks do 4x normal damage. 0004D8A6
2 AGI 7, LVL 16 Your ranged sneak attacks do 3x normal damage and your melee sneak attacks do 5x normal damage. 000E3704
3 AGI 7, LVL 33 Your ranged sneak attacks do 3.5x normal damage and your melee sneak attacks do 10x normal damage. 000E3705

Fallout 76

You trained as a shadow warrior.
Rank Description Base ID
1 Sneak attacks with melee weapons do 2.3x normal damage. 0004D8A6
2 Sneak attacks with melee weapons do 2.6x normal damage. 000E3704
3 Sneak attacks with melee weapons do 3x normal damage. 000E3705


  • In Fallout 76, Ninja only affects melee weapons.
    • Due to Covert Operative affecting the sneak attack multiplier of unarmed weapons, using Covert Operative 3 and Ninja 3 will yield a x3.5 sneak attack multiplier on unarmed weapons.

Fallout 2d20

When making a sneak attack with a melee weapon or unarmed attack, the damage is increased by +2d6.

You cannot gain this benefit while in Power Armor.


  • Icon pc.png In Fallout 3, the extra 15% critical chance does not work without the help of the unofficial Fallout 3 patch. [verified]
  • Icon pc.png Icon ps3.png Icon xbox360.png In Fallout: New Vegas, Ninja multiplies your critical chance by 1.15 instead of adding a flat 15%, unlike all other perks/traits that modify critical chance. For example, a character with a critical hit chance of even 25% would have it be increased to only 28.5% rather than to 40% as it should. (25% * 1.15 = 28.75% vs 25% + 15% = 40%) [verified]
  • In Fallout 4, the bonus to the actual sneak attack damage multiplier on silenced weapons provided by this perk is known to behave erratically when interacting with Cloak & Dagger and Mister Sandman. Patch 1.4 tried to address this bug, so that you could no longer reach a 6.3x multiplier. However, there was still some variance depending on the order you obtain the three perks. The current multipliers are:
Sandman 3, Ninja 3, Cloak = 4.4x
Ninja 3, Sandman 3, Cloak = 4.7x
Sandman 3, Cloak, Ninja 3 = 4.7x
Ninja 3, Cloak, Sandman 3 = 4.8x
Cloak, Ninja 3, Sandman 3 = 4.8x
Cloak, Sandman 3, Ninja 3 = 4.8x
Right now the only solution for Icon ps4.png and Icon xboxone.png appears to be selecting/receiving these perks in the "correct" order. The reason these differences happen is because, although Cloak & Dagger and Mister Sandman both use multiplication, Ninja is set to use addition. Because order of operations matters when both are mixed, results from having all three perks can vary.[verified]
  • Icon pc.png In Fallout 4, the Ninja perk works very oddly with melee attacks. One-handed weapons are always treated as melee, and unarmed are always treated as ranged attacks. Rank one doesn't affect two-handed melee weapons at all, rank two treats two-handed weapons as ranged weapons, and rank 3 finally treats two-handed melee weapons as melee weapons. This results in a very bizarre sneak attack damage progression for two-handed melee weapon users, and a very low one for unarmed users. On the PC version, a fix for this and the above issue is available here. [verified]