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NaNny (Fix NaN Health / Absorption)

A Minecraft Neo/Forge mod that cleans up after mods that set entities' health and/or absorption to NaN.
by qther
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15,891,050 downloads
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Updated Jun 30, 2026
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NaNny

Because some mods can't keep their floats in control.

NaNny is a Minecraft Neo/Forge mod that cleans up after mods that set entities' health and/or absorption to NaN.

This is accomplished by hooking into the following events and cancelling and optionally healing the affected entities:

  • LivingAttackEvent
  • LivingDamageEvent
  • LivingHealEvent
  • LivingHurtEvent

NaNny creates a TOML configuration file in world/serverconfig/nanny-server.toml

The configuration file has the following options at present:

  • doHeal - Enable setting the health of an entity when NaN is dealt or healed to them (Default true)
  • health - Percentage of max health to set the entity to when NaN dealt or healed to them (Default 1.0)
  • log - Whether or not to log events that set entities' health to NaN (Default true)
1.0.1
MC NeoForge, Server, 26.1, 26.1.1, 26.1.2
Release 2026-06-03 Get
1.0.1
MC NeoForge, 1.21.1
Release 2024-09-16 Get
1.0.1
MC 1.21, NeoForge, Server
Release 2024-06-27 Get
1.0.1
MC Forge, 1.20.4, Server
Release 2024-06-27 Get

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