Uncontrollable Fear is an effect that can be caused by powerful and imposing enemies in Fallout 76.
The only enemies that can cause the Uncontrollable Fear effect are the wendigo colossus, including Earle Williams. Prior to launching the short-ranged attack, the enemy will lower its head and roar, causing anyone within range to flee.
Uncontrollable Fear causes the same effect on all player characters, regardless of level. If impacted by the attack, the third-person perspective shows the individual running away from the creature, waving their arms above their head. The gameplay icon will appear above their heads, next to their name.
The screen fades to a dark gray palate, a unique sound effect can be heard, and one's movement can only be controlled slightly while running. The effect lasts for four seconds before full control is regained. The effect can be countered by consuming Liquid Courage, providing immunity for four minutes.
- The effect was introduced in the The Legendary Run update, though related game files indicate it was slated to launch shortly after Wastelanders.
- Some control is retained while frightened, and if fast enough, the player character can turn around and automatically run toward the attacking enemy.