# \#particle-systems **URL:** https://forums.unrealengine.com/tag/particle-systems/86.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Niagara System – Make Particles Follow Mouse (Ball Pit Simulation)](https://forums.unrealengine.com/t/niagara-system-make-particles-follow-mouse-ball-pit-simulation/2422212)
**Author:** [@schlafse](https://forums.unrealengine.com/u/schlafse)\ **Replies:** 1\ **Last updated:** [October 19, 2026, 8:03am UTC](https://forums.unrealengine.com/t/niagara-system-make-particles-follow-mouse-ball-pit-simulation/2422212 "2026-10-19T08:03:25Z")
Hi, sorry for my bad English. I’m very new to UE5 and I’m making a ball pit simulation using niagara system (with PBD) and trying to make the particles follow the mouse. not click or hit anything, just follow the mouse c… --- ## [Scale a niagara particle system](https://forums.unrealengine.com/t/scale-a-niagara-particle-system/450101)
**Author:** [@YuuJin](https://forums.unrealengine.com/u/YuuJin)\ **Replies:** 41\ **Last updated:** [September 28, 2026, 6:05pm UTC](https://forums.unrealengine.com/t/scale-a-niagara-particle-system/450101 "2026-09-28T18:05:09Z")
is it possible to scale an entire niagara particle system as a whole? --- ## [Niagara User Parameters inside blueprint instances are reset on changes to the BP class](https://forums.unrealengine.com/t/niagara-user-parameters-inside-blueprint-instances-are-reset-on-changes-to-the-bp-class/1543152)
**Author:** [@lucio.pc](https://forums.unrealengine.com/u/lucio.pc)\ **Replies:** 1\ **Last updated:** [September 23, 2026, 7:09am UTC](https://forums.unrealengine.com/t/niagara-user-parameters-inside-blueprint-instances-are-reset-on-changes-to-the-bp-class/1543152 "2026-09-23T07:09:39Z")
Hello everyone, I’m seeing an issue using niagara user parameters with blueprints, want to make sure is a bug or how should I address it. Just for context my intention was to have multiple actors in the level, that are… --- ## [Sync Blueprint and Niagara System](https://forums.unrealengine.com/t/sync-blueprint-and-niagara-system/2665668)
**Author:** [@wilberolive](https://forums.unrealengine.com/u/wilberolive)\ **Replies:** 1\ **Last updated:** [September 23, 2026, 6:52am UTC](https://forums.unrealengine.com/t/sync-blueprint-and-niagara-system/2665668 "2026-09-23T06:52:16Z")
I have a niagara system that has a user parameter of type mesh array. I then have a blueprint that also contains an array of meshes. I need to keep these two arrays in sync. At the moment I just do it manually in editor,… --- ## [Niagara Data Channels and Continuous Emitters](https://forums.unrealengine.com/t/niagara-data-channels-and-continuous-emitters/2664372)
**Author:** [@wilberolive](https://forums.unrealengine.com/u/wilberolive)\ **Replies:** 4\ **Last updated:** [September 6, 2026, 3:54pm UTC](https://forums.unrealengine.com/t/niagara-data-channels-and-continuous-emitters/2664372 "2026-09-06T15:54:41Z")
I’ve created a niagara system of leaves falling to the ground. The idea is that I want to put this on a tree, so the leaves look like they are falling from the tree. The problem is, if I spawn a particle system at every … --- ## [UE5 Niagara Ribbon Problems](https://forums.unrealengine.com/t/ue5-niagara-ribbon-problems/763487)
**Author:** [@apfelbaum](https://forums.unrealengine.com/u/apfelbaum)\ **Replies:** 6\ **Last updated:** [August 24, 2026, 12:33am UTC](https://forums.unrealengine.com/t/ue5-niagara-ribbon-problems/763487 "2026-08-24T00:33:49Z")
Hello, I have 2 problems with Niagara, maybe someone knows the answer. I need the ribbons to spawn in the direction of the emitter. Currently the ribbons spawn rotation is locked to the world axis. How can I have “… --- ## [How to play sound when Niagara mesh contacts the ground?](https://forums.unrealengine.com/t/how-to-play-sound-when-niagara-mesh-contacts-the-ground/2743974)
**Author:** [@Player\_003](https://forums.unrealengine.com/u/Player_003)\ **Replies:** 1\ **Last updated:** [August 17, 2026, 7:36pm UTC](https://forums.unrealengine.com/t/how-to-play-sound-when-niagara-mesh-contacts-the-ground/2743974 "2026-08-17T19:36:30Z")
So i have shell ejection Niagara particle and i wish to play sound when casing hits the ground but how could i do something like that? I activate Niagara Component on Montage Notify in weapon blueprint. --- ## [How to hide Niagara when teleporting.](https://forums.unrealengine.com/t/how-to-hide-niagara-when-teleporting/2216847)
**Author:** [@turbotanaka](https://forums.unrealengine.com/u/turbotanaka)\ **Replies:** 1\ **Last updated:** [August 8, 2026, 1:36am UTC](https://forums.unrealengine.com/t/how-to-hide-niagara-when-teleporting/2216847 "2026-08-08T01:36:47Z")
I am using ribbon trails on projectiles and when I teleport them out of the object pool the ribbon trails get stretched. I’ve tried dynamically enabling and disabling it, but the results are imperfect and stretched ribb… --- ## [How to trigger play sound for multiple collisions](https://forums.unrealengine.com/t/how-to-trigger-play-sound-for-multiple-collisions/2737422)
**Author:** [@celestia](https://forums.unrealengine.com/u/celestia)\ **Replies:** 1\ **Last updated:** [July 22, 2026, 7:11pm UTC](https://forums.unrealengine.com/t/how-to-trigger-play-sound-for-multiple-collisions/2737422 "2026-07-22T19:11:04Z")
I have a Niagara particle system simulating ejected shell casings that bounce a few times before settling on the ground. I’m using the Play Audio module (following the official Play\_Sound\_on\_Collision example from Conten… --- ## [Multiple Collision Events from Single Niagara Emitter?](https://forums.unrealengine.com/t/multiple-collision-events-from-single-niagara-emitter/1339945)
**Author:** [@SquirrelMonkey1](https://forums.unrealengine.com/u/SquirrelMonkey1)\ **Replies:** 1\ **Last updated:** [April 25, 2026, 4:39pm UTC](https://forums.unrealengine.com/t/multiple-collision-events-from-single-niagara-emitter/1339945 "2026-04-25T16:39:10Z")
Hey everyone! I hope you’re all doing well. I’ve got a quick question regarding the Niagara particle system. I am trying to create rain, which behaves differently depending on the surface it collides with. I have succe… --- ## [Is there a way to see replicated particle systems in ue4 replays that are already playing without playing them from the beginning](https://forums.unrealengine.com/t/is-there-a-way-to-see-replicated-particle-systems-in-ue4-replays-that-are-already-playing-without-playing-them-from-the-beginning/484154)
**Author:** [@realRitT](https://forums.unrealengine.com/u/realRitT)\ **Replies:** 1\ **Last updated:** [April 9, 2026, 6:32am UTC](https://forums.unrealengine.com/t/is-there-a-way-to-see-replicated-particle-systems-in-ue4-replays-that-are-already-playing-without-playing-them-from-the-beginning/484154 "2026-04-09T06:32:51Z")
For example, I have a smoke grenade that creates a smokescreen (a cascade particle system) for several minutes and fades away. I have tried using it in a replicated actor with a replicated particle system component. The… --- ## [Broken/Gray shaders - Broken material instance - gray checkerboard material instance. Uncompiled shaders](https://forums.unrealengine.com/t/broken-gray-shaders-broken-material-instance-gray-checkerboard-material-instance-uncompiled-shaders/2711908)
**Author:** [@PotenMing](https://forums.unrealengine.com/u/PotenMing)\ **Replies:** 0\ **Last updated:** [April 6, 2026, 5:53pm UTC](https://forums.unrealengine.com/t/broken-gray-shaders-broken-material-instance-gray-checkerboard-material-instance-uncompiled-shaders/2711908 "2026-04-06T17:53:14Z")
I have a sprite material for realtime VFX. The SPRITE Material is using a regular texture - not any “virtual texture”. I’ve made a material instance. This material instance is hooked to niagara-system . When the VFX fir… --- ## [Alembic Particles in UE5](https://forums.unrealengine.com/t/alembic-particles-in-ue5/2711331)
**Author:** [@MADMOVIESINC](https://forums.unrealengine.com/u/MADMOVIESINC)\ **Replies:** 0\ **Last updated:** [April 4, 2026, 3:31am UTC](https://forums.unrealengine.com/t/alembic-particles-in-ue5/2711331 "2026-04-04T03:31:54Z")
Hello there! I am wondering if there is a workflow currently to get alembic particle systems into UE5? I am exporting particles as alembic data from LiquiGen. At the moment, I can bring those particles into Blender, but … --- ## [Is there a way to blow away Niagara with Radial Force?](https://forums.unrealengine.com/t/is-there-a-way-to-blow-away-niagara-with-radial-force/2709548)
**Author:** [@ToniccWotar](https://forums.unrealengine.com/u/ToniccWotar)\ **Replies:** 0\ **Last updated:** [March 28, 2026, 6:54am UTC](https://forums.unrealengine.com/t/is-there-a-way-to-blow-away-niagara-with-radial-force/2709548 "2026-03-28T06:54:20Z")
I’m not sure if this is possible, but is there a way to blow away particles with Radial Force? There are modules related to wind, but I can’t find any modules that work with the Force in the world.There are several para… --- ## [So I made this bullet tracer effect for Unreal Engine](https://forums.unrealengine.com/t/so-i-made-this-bullet-tracer-effect-for-unreal-engine/2703951)
**Author:** [@Daniel\_Milkov](https://forums.unrealengine.com/u/Daniel_Milkov)\ **Replies:** 0\ **Last updated:** [March 5, 2026, 8:16pm UTC](https://forums.unrealengine.com/t/so-i-made-this-bullet-tracer-effect-for-unreal-engine/2703951 "2026-03-05T20:16:07Z")
So I made a Unreal Engine plugin for bullet tracers Here is the link to FAB (click me!) The idea was simple: I wanted a tracer effect that was easy to drop into a project, customizable, and not something that des… --- ## [Niagara particle system disappears when set to local space](https://forums.unrealengine.com/t/niagara-particle-system-disappears-when-set-to-local-space/769893)
**Author:** [@Soul\_Gatherer1](https://forums.unrealengine.com/u/Soul_Gatherer1)\ **Replies:** 3\ **Last updated:** [March 1, 2026, 9:34am UTC](https://forums.unrealengine.com/t/niagara-particle-system-disappears-when-set-to-local-space/769893 "2026-03-01T09:34:13Z")
Hi there, I wanted to be able to translate, rotate, and scale a particle system, so I tried setting the emitter to local space, however when I do that the emitter is no longer visible in the editor, does anyone happen to… --- ## [Niagara Spawn Burst Instantaneous is doesn't work.](https://forums.unrealengine.com/t/niagara-spawn-burst-instantaneous-is-doesnt-work/2033874)
**Author:** [@turbotanaka](https://forums.unrealengine.com/u/turbotanaka)\ **Replies:** 1\ **Last updated:** [January 6, 2026, 3:56pm UTC](https://forums.unrealengine.com/t/niagara-spawn-burst-instantaneous-is-doesnt-work/2033874 "2026-01-06T15:56:25Z")
I wanted an option to instantly spawn a specified number of emitters, but this option doesn’t seems work at all. I checked the particle rendered using Spawn Per Unit and Spawn Rate. After replacing these with Spawn Bur… --- ## [Rendering Niagara Systems ](https://forums.unrealengine.com/t/rendering-niagara-systems/2688072)
**Author:** [@Vecternz](https://forums.unrealengine.com/u/Vecternz)\ **Replies:** 0\ **Last updated:** [December 27, 2025, 10:34pm UTC](https://forums.unrealengine.com/t/rendering-niagara-systems/2688072 "2025-12-27T22:34:54Z")
Can someone help me figure out why when I render my scene, my Niagara system is rendering like this..? The particle system is Fiery red when rendered and completely different than what it is supposed to look like compare… --- ## [Niagara System moving at a different rate than attached parent actor](https://forums.unrealengine.com/t/niagara-system-moving-at-a-different-rate-than-attached-parent-actor/2679526)
**Author:** [@Zapking9224](https://forums.unrealengine.com/u/Zapking9224)\ **Replies:** 2\ **Last updated:** [November 28, 2025, 9:31am UTC](https://forums.unrealengine.com/t/niagara-system-moving-at-a-different-rate-than-attached-parent-actor/2679526 "2025-11-28T09:31:12Z")
Hi, So I’m having an issue where the particle system that I have attached to my Projectile Actor is moving at a faster rate than my projectile. I set everything to local space in the emitter settings but I’m not sure wh… --- ## [Niagara ScratchPad Custom Collision ](https://forums.unrealengine.com/t/niagara-scratchpad-custom-collision/2674261)
**Author:** [@SeverynB](https://forums.unrealengine.com/u/SeverynB)\ **Replies:** 0\ **Last updated:** [November 12, 2025, 3:52pm UTC](https://forums.unrealengine.com/t/niagara-scratchpad-custom-collision/2674261 "2025-11-12T15:52:45Z")
HELP i need somebody! I have an emitter that spawns exactly two particles at random positions. I want them to attract each other, collide once, and then fly apart. To keep it highly optimized, I’m avoiding physics-based… --- ## [UE5.2 crash caused by niagara particle system + audio spectrum 'NiagaraDataInterfaceAudio'](https://forums.unrealengine.com/t/ue5-2-crash-caused-by-niagara-particle-system-audio-spectrum-niagaradatainterfaceaudio/1170362)
**Author:** [@Anthony\_Attwood](https://forums.unrealengine.com/u/Anthony_Attwood)\ **Replies:** 15\ **Last updated:** [October 1, 2025, 1:40pm UTC](https://forums.unrealengine.com/t/ue5-2-crash-caused-by-niagara-particle-system-audio-spectrum-niagaradatainterfaceaudio/1170362 "2025-10-01T13:40:54Z")
UE5.2 crashes when using an audio spectrum scratch module in the stack when pressing ‘play’ to test the game. The set up is simple: Particles are positioned on the normals of a custom static mesh. Such as using ‘stati… --- ## [Why particles are shaking?](https://forums.unrealengine.com/t/why-particles-are-shaking/2657459)
**Author:** [@zucchini\_ue](https://forums.unrealengine.com/u/zucchini_ue)\ **Replies:** 1\ **Last updated:** [September 17, 2025, 5:36pm UTC](https://forums.unrealengine.com/t/why-particles-are-shaking/2657459 "2025-09-17T17:36:22Z")
I used neighbor grid to simulate collision between particles. But each particle had a small shake like someone was knocking the table! Why and how to fix it? I upload a GIF here. --- ## [Niagara Fluids 2D: Depth Map Collision causing ugly intersections?](https://forums.unrealengine.com/t/niagara-fluids-2d-depth-map-collision-causing-ugly-intersections/2318781)
**Author:** [@Slavq](https://forums.unrealengine.com/u/Slavq)\ **Replies:** 1\ **Last updated:** [September 3, 2025, 3:15pm UTC](https://forums.unrealengine.com/t/niagara-fluids-2d-depth-map-collision-causing-ugly-intersections/2318781 "2025-09-03T15:15:59Z")
Update: It’s not from the plane intersecting the mesh, it’s from Depth Map Collisions! The fluid sim plane doesn’t intersect with this mesh (it’s camera aligned) This is a Niagara Fluid 2D gas sim with Depth Map Collis… --- ## [Error from NDC module.](https://forums.unrealengine.com/t/error-from-ndc-module/2638848)
**Author:** [@Extrahdmi](https://forums.unrealengine.com/u/Extrahdmi)\ **Replies:** 0\ **Last updated:** [August 12, 2025, 7:45am UTC](https://forums.unrealengine.com/t/error-from-ndc-module/2638848 "2025-08-12T07:45:30Z")
When I tried to use NDC in Niagara, I got this error and it didn’t work. /Engine/Generated/NiagaraEmitterInstance.ush:1439:122: Err0r: expected parameter declarator void Read\_Emitter\_NDC\_ImpactASC12398ASC35501ASC12415A… --- ## [Movie Render Queue issue with particles?](https://forums.unrealengine.com/t/movie-render-queue-issue-with-particles/2629110)
**Author:** [@Pouyad](https://forums.unrealengine.com/u/Pouyad)\ **Replies:** 0\ **Last updated:** [August 4, 2025, 3:16am UTC](https://forums.unrealengine.com/t/movie-render-queue-issue-with-particles/2629110 "2025-08-04T03:16:22Z")
Hey folks, I hope someone has answer for this issue. don’t know yet what’s happening to the dust particles after MRQ rendering is done. I have included two videos, one is Viewport’s which is how it is supposed to be ren… --- ## [How do I fix this particle rendering issue?](https://forums.unrealengine.com/t/how-do-i-fix-this-particle-rendering-issue/2600843)
**Author:** [@K4BURA](https://forums.unrealengine.com/u/K4BURA)\ **Replies:** 0\ **Last updated:** [July 11, 2025, 3:24pm UTC](https://forums.unrealengine.com/t/how-do-i-fix-this-particle-rendering-issue/2600843 "2025-07-11T15:24:03Z")
Hey there! I’m quite new to unreal and niagara, and I’m currently facing this issue: I have a niagara system with a mesh (the black spots) and a separate one with default particles (the swords). As you can see, in … --- ## [Is Niagara fluid template Grid2D\_Gas\_Color broken in 5.4 / 5.5 ?](https://forums.unrealengine.com/t/is-niagara-fluid-template-grid2d-gas-color-broken-in-5-4-5-5/2333017)
**Author:** [@parseparse](https://forums.unrealengine.com/u/parseparse)\ **Replies:** 2\ **Last updated:** [June 25, 2025, 12:24pm UTC](https://forums.unrealengine.com/t/is-niagara-fluid-template-grid2d-gas-color-broken-in-5-4-5-5/2333017 "2025-06-25T12:24:17Z")
Hi there. I’m finally diving into advanced uses of Niagara fluid setups, both 2D and 3D. I was working with 5.3 for different projects, but recently switched to 5.4 and 5.5 for some R&D. I just noticed some huge differe… --- ## [Niagara align sprit to mesh orientation singularity](https://forums.unrealengine.com/t/niagara-align-sprit-to-mesh-orientation-singularity/2541840)
**Author:** [@koromire1](https://forums.unrealengine.com/u/koromire1)\ **Replies:** 1\ **Last updated:** [June 18, 2025, 1:43am UTC](https://forums.unrealengine.com/t/niagara-align-sprit-to-mesh-orientation-singularity/2541840 "2025-06-18T01:43:26Z")
Hello, When using the mesh orientation vector for facing, I want it to point to the world up vector (0, 0, 1). When I use a very small X or Y component, this works correctly: However, when I use a purely up vector… --- ## [How to set Niagara Sprite Renderer Sub Image Size using Parameter?](https://forums.unrealengine.com/t/how-to-set-niagara-sprite-renderer-sub-image-size-using-parameter/1599181)
**Author:** [@dbkdavid](https://forums.unrealengine.com/u/dbkdavid)\ **Replies:** 2\ **Last updated:** [June 10, 2025, 1:06pm UTC](https://forums.unrealengine.com/t/how-to-set-niagara-sprite-renderer-sub-image-size-using-parameter/1599181 "2025-06-10T13:06:31Z")
I’d like to make a Niagara Emitter with a Sprite Renderer and a variable that controls the sprite Sub UV image size, but I’m noticing that the system won’t let me drag and drop parameters onto the inputs of the Sprite Re… --- ## [How to make a procedural fractal lightning bolt in Niagara?](https://forums.unrealengine.com/t/how-to-make-a-procedural-fractal-lightning-bolt-in-niagara/2535195)
**Author:** [@Karton](https://forums.unrealengine.com/u/Karton)\ **Replies:** 3\ **Last updated:** [June 8, 2025, 8:47pm UTC](https://forums.unrealengine.com/t/how-to-make-a-procedural-fractal-lightning-bolt-in-niagara/2535195 "2025-06-08T20:47:20Z")
I’m working on a procedural 3D fractal lightning bolt effect in Niagara, targeting GPU compute particles, and I’ve hit a wall with the recursive branching logic. I’d love some advice or alternative approaches! This is t… [Next page](https://forums.unrealengine.com/tag/particle-systems/86.md?match_all_tags=true&page=1&tags%5B%5D=particle-systems)