SlimeFun Server Setup Guide for Minecraft (2026)
SlimeFun is a Spigot/Paper plugin that adds over 500 items to Minecraft without requiring any client-side mods. It includes technology trees, magic systems, automation, and custom crafting. Players experience modpack-level content on a vanilla-compatible server.
What SlimeFun Adds
Technology
- Electrical power generation (solar panels, reactors)
- Machines (auto-crafters, ore grinders, electric furnaces)
- Cargo networks (item transportation pipes)
- Programmable androids (robot helpers)
Magic
- Magical staves and wands
- Enchanted armor with special abilities
- Talismans that provide passive buffs
- Magical food with unique effects
Resources
- New ores and alloys
- Custom crafting recipes using a multiblock workbench
- Backpacks for extra inventory
- GPS and waypoint system
Installation
- Use Paper or Purpur (not Spigot, performance is better on Paper)
- Download SlimeFun from the official GitHub
- Place the jar in
plugins/ - Restart the server
- The plugin generates extensive configs in
plugins/Slimefun/
SlimeFun works on vanilla clients. No mods needed for players.
Essential Addons
SlimeFun has a rich addon ecosystem:
- InfinityExpansion - End-game machines and storage
- ExoticGarden - New crops and food
- LiteXpansion - Industrial machines inspired by IndustrialCraft
- FluffyMachines - Quality of life machines
- DynaTech - Advanced technology items
- Networks - Advanced item storage networks
Configuration
Research System
Players unlock SlimeFun items through research:
researches:
free-in-creative: true
currency: LEVEL
cost-multiplier: 1.0
Performance
SlimeFun is resource-intensive. Tweak these:
URID:
custom-ticker-delay: 2
cargo:
max-items-per-node: 128
Increase ticker delay on busy servers to reduce lag.
Progression Path
Typical player progression:
- Tier 0: Craft basic SlimeFun workbench
- Tier 1: Grind stone, mine custom ores
- Tier 2: Build enhanced furnace, create alloys
- Tier 3: Set up basic electric machines
- Tier 4: Build cargo networks for automation
- Tier 5: Nuclear power and advanced machines
- Tier 6: Programmable androids and end-game items
Performance Considerations
SlimeFun uses a custom tick system for machines. Each active machine ticks every few seconds. With hundreds of machines across a server, this adds up.
Tips:
- Limit machines per chunk (configurable)
- Increase tick delay during peak hours
- Use Paper's async chunk loading
- Monitor with
/sf timings
Hardware Requirements
| Players | RAM | Notes | |---------|-----|-------| | 1 to 15 | 4 to 6 GB | Light machine usage | | 15 to 40 | 6 to 10 GB | Moderate automation | | 40 to 80 | 10 to 16 GB | Heavy machine load |
SlimeFun is CPU-hungry. Prioritize fast single-thread performance over core count.
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