promotional banner

Micro Mayhem

Adds simplified microbiology to minecraft with mutation and selection for traits all with both custom and vanilla effects ranging from pathogens, to neutral, to beneficial.
Back to Files

micromayhem-1.21.1-2.5.5.jar

File namemicromayhem-2.5.5.jar
Uploader
xXGraceXxxXGraceXx
Uploaded
May 7, 2026
Downloads
148
Size
474.9 KB
Mod Loaders
NeoForge
File ID
8055051
Type
R
Release
Supported game versions
  • 1.21.1

Curse Maven Snippet

NeoForge

implementation "curse.maven:micromayhem-1534289:8055051"

Learn more about Curse Maven

What's new

Fixed several bugs and issues: 

  • Swab stack-of-1 vanishing into thin air — single item now replaces hand directly instead of shrink+add
  • Creative death spam — added !isCreative() guard before applying illness death/damage
  • Debug syringe not infecting other players on servers — was using MobColony for everyone, now uses HostMicrobiome for players and MobColony for mobs
  • Adaptive immunity actually granted — onNaturalClearance was never being called when a strain cleared, so immunity never built up
  • Mob colony infection cap raised from 6 to 12
  • Contaminated suit now sheds onto nearby entities and blocks every 10 seconds
  • Hazmat suit 10 second grace period after autoclaving before re-contamination begins — stamps SterilizedAt timestamp, absorption tick skips for 10 seconds after sterilizationVaccine syringe recipe added — syringe + petri dish shapeless
  • Recipes not showing in JEI — recipe path was data/micromayhem/recipes/ but 1.21.1 changed it to data/micromayhem/recipe/ without the s. All 19 recipes copied to correct path.
  • Nutrient agar mushroom tag error — minecraft:mushrooms tag doesn't exist, replaced with explicit brown and red mushroom items, added separate recipe for each
  • Vaccine syringe recipe fixed — was requiring empty petri dish, changed to syringe + fermented spider eye. Strain loading happens at use time via offhand petri dish

This mod has no additional files