Why don't Niagara sprite particles face the camera?

Sprite Renderer's Facing Mode defaults to Custom; without setting custom axes, sprites end up axis-aligned. Switch to Camera Position or Velocity-Aligned for proper billboarding.

Velocity Aligned use case?

Trails or projectiles where sprite should align along motion direction. Combine with Length Scale module for stretched billboards.

Camera Plane vs Camera Position?

Camera Plane: sprite parallel to view plane (always flat to camera). Camera Position: sprite faces camera location (slight perspective). Both are common; pick based on visual goal.

Fix: Niagara Sprite Not Camera-Facing

Quick answer: Sprite Renderer → Facing Mode = Camera Position (or Camera Plane). Default Custom needs explicit axes.

Smoke puff Niagara emitter. Sprites all aligned to world Y-up; some look at camera, others edge-on. Default Custom mode picks unset.

The Fix

Niagara Sprite Renderer:
  Facing Mode:        Camera Position     // or Camera Plane
  Pivot:              (0.5, 0.5)
  Sub Image Size:     (1, 1)
  Material:           M_Smoke_Translucent

// For trails: Velocity Aligned
  Facing Mode:        Velocity Aligned
  Length Scale:       1.5

Camera Position is the standard billboard. Velocity Aligned for streaks. Custom only when you have specific math you want; rare.

Verifying

Walk around emitter. Sprites consistently face camera. Without fix: visible flickering edge-on views.

“Camera Position. Sprites face viewer.”

Related Issues

For Niagara mesh LOD, see mesh LOD. For Stateless emitter, see stateless.

Camera Position. Faces always.