KillFX

Fully client-side, ridiculously customizable kill effects for Minecraft.

Trigger real lightning, 3D skin-matched ghosts, custom PNG particles, fireworks, shockwaves, and more the instant something dies — plus fully customizable critical hit particles and hit sounds.

No server install. No packets. Works on any server.

Fabric • 1.21.4 • 1.21.10 • 1.21.11 • Java 21

What is KillFX?

KillFX is a fully client-side cosmetic mod that plays visual effects whenever an entity dies.

Everything is rendered locally on your client:

• No server installation required
• No packets sent
• No gameplay changes
• Safe to use on any multiplayer server

Rather than being a single effect, KillFX is a complete customization toolkit with editable presets, entity filters, custom particles, and sound effects.

Kill Effects

Create anything from simple kill flashes to over-the-top cinematic effects.

Included Effects

• Real Lightning

  • Spawns a client-side minecraft:lightning_bolt
  • Uses vanilla lightning visuals and thunder
  • No damage or fire

  • 3D Ghosts

    • Creates a translucent, skin-matched ghost of the victim
    • Floats upward and fades away

  • Custom PNG Particles

    • Import your own PNG images
    • Render them as custom billboard particles

  • Additional Effects

    • Fireworks
    • Particle bursts
    • Shockwaves
    • Floating text
    • And more

Advanced Customization

Every effect supports:

• Full RGB color control
• Size scaling
• Particle count
• Lifetime
• Motion settings
• Gravity
• Glow effects
• Trails
• Additive blending

Presets

Includes built-in presets such as:

• PvP
• Cosmic
• Fire
• Lightning
• Minimal

Or create your own from scratch.

Filters

Only trigger effects when:

• Players die
• Mobs die
• Specific entities die
• Custom conditions are met

Critical Hits

Replace Minecraft's vanilla crit particle with your own custom design.

Custom PNG Crit Particles

Import any PNG and customize:

• Size
• Opacity
• Particle count
• Rotation
• RGB colors
• Rainbow mode
• Additive blending
• Trails
• Gravity
• Spread

Includes a one-click "Match Vanilla" option.

Configuration Tabs

• Setup
• Appearance
• Motion
• Texture

Hit Sounds

Play a custom sound whenever you land a hit.

Features

• Choose from built-in sounds
• Import your own .ogg files
• Volume control
• Pitch control
• Crit-only playback
• ▶ Sound preview button

Vanilla Sound Override

Mute Minecraft's default hit and crit sounds so your custom sound completely replaces them.

Share Your Setup

Export and import your entire configuration.

Includes:

• Global settings
• All presets
• Effect configurations
• Crit particle settings
• Sound settings

Configurations can be copied directly to the clipboard or saved to a file for easy sharing.

Quality & Compatibility

Built for Multiple Versions

Supports:

• Minecraft 1.21.4
• Minecraft 1.21.10
• Minecraft 1.21.11

All versions are built from a single source using proper production mappings.

Modern Codebase

• Java 21
• Fabric
• Mixins
• Tested before release

Easy Configuration

Access settings through:

• A dedicated keybind
• Mod Menu integration

Installation

Requirements

• Fabric Loader 0.16+
• Fabric API

Steps

1. Install Fabric Loader and Fabric API for your Minecraft version.
2. Download the matching killfx-<version>+<mc>.jar from the latest release.
3. Place the file inside your mods/ folder.
4. Launch Minecraft.

Optional

Install Mod Menu for quick access from the Mods screen, or assign the KillFX keybind in Controls.

Create anything from subtle PvP effects to complete visual chaos — all client-side, all customizable, and compatible with any server.