Contagious Effects
A Minecraft Fabric mod that enables status effects to spread between nearby players. Features configurable range, cooldowns, player state filtering, and in-game configuration via ModMenu.
- Loaders
- Fabric
- Downloads on Modrinth
- 96
- Followers on Modrinth
- 0
- version
- 1
- Updated
- February 2, 2026Feb 2
- Published
- in 2026
At a glance
Needed both in the game and on the server
Contagious Effects
A Minecraft Fabric mod that enables status effects to spread between nearby players.
Overview
Contagious Effects adds a new layer of interaction to multiplayer Minecraft by allowing potion effects to propagate between players within a configurable range. When a player carries a status effect, nearby players have a chance to contract the same effect, simulating a form of proximity-based transmission.
Features
- Configurable Range: Set the distance over which effects can spread (default: 2 blocks)
- Spread Intervals: Control how frequently the mod checks for effect transmission (default: every 10 ticks)
- Cooldown System: Prevent constant re-application with a configurable cooldown period
- Smart Overwriting: Option to only replace existing effects if the incoming effect is stronger or longer-lasting
- Player State Filtering: Automatically exclude spectators and creative mode players from both spreading and receiving effects
- In-game Configuration: Full integration with ModMenu and Cloth Config for easy adjustment of all settings
Configuration Options
| Option | Default | Description |
|---|---|---|
| Range | 2.0 blocks | Maximum distance for effect transmission |
| Scan Interval | 10 ticks | Frequency of effect spread checks |
| Cooldown | 20 ticks | Minimum time between re-application of the same effect |
| Stronger Only | false | Only apply effects if they are stronger than existing ones |
| Ignore Spectators | true | Exclude spectators from the effect system |
| Ignore Creative | false | Exclude creative mode players from the effect system |
Compatibility
- Minecraft: 1.21.11
- Fabric Loader: >= 0.18.4
- Java: >= 21
License
This project is released under the CC0 1.0 Universal license.
If you have questions join my Discord: https://discord.gg/jMKb3VxSmZ
FAQ
How to install Contagious Effects?
Install Fabric for your Minecraft version, download Contagious Effects for the same version and loader, put the file into the mods folder and launch the game with the loader profile.
Which Minecraft versions does Contagious Effects support?
Contagious Effects has builds for Minecraft 1.21.11.
Is Contagious Effects needed on the server?
Needed in the game and on the server
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