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Impossible Luck project artwork

CurseForge · Minecraft mod

Impossible Luck

a mod witch makes you impossibaly lucky

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Impossible Luck release should I use?

Updated 7 months ago
Latest stable file best-possible-luck-1.9.9.jar
Game version 1.12.2
Loader Forge

Impossible Luck best-possible-luck-1.9.9.jar targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is Impossible Luck required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

What else does Impossible Luck best-possible-luck-1.9.9.jar need?

best-possible-luck-1.9.9.jar. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add Impossible Luck without breaking your instance.

Built for Impossible Luck best-possible-luck-1.9.9.jar. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use best-possible-luck-1.9.9.jar. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside best-possible-luck-1.9.9.jar. It opens that exact file at the source.

About this project

What does Impossible Luck add?

Short Description

Best Possible Luck is a Minecraft Forge 1.12.2 mod that changes how vanilla “luck” works by biasing existing game systems instead of replacing Minecraft’s randomness engine. Choose between Lucky or Unlucky world states and experience altered loot, mob behavior, world generation, combat outcomes, and survival mechanics.


Full Description

Best Possible Luck is a Minecraft Forge 1.12.2 experiment that reworks how “luck” behaves in vanilla Minecraft by selectively biasing existing RNG-driven systems rather than overriding the global random engine. The goal is to keep Minecraft’s core feel intact while making outcomes noticeably favorable or hostile depending on the selected luck state.

At the center of the mod is a simple global setting:

  • /lucktype lucky

  • /lucktype unlucky

Lucky mode shifts many gameplay systems toward beneficial outcomes, while unlucky mode inverts those same systems into more punishing or chaotic behavior.

This affects far more than loot tables. The mod modifies world generation, mob behavior, combat interactions, survival mechanics, and environmental events through targeted event hooks.

World Generation and Environment

  • Ore generation, terrain decoration, chunk population, and map generation can be biased based on luck state.

  • Diamond ore receives a significant boost in lucky mode, along with stronger general overworld ore presence.

  • Weather cycles are influenced to feel more stable or more volatile depending on configuration.

  • Certain dangerous world features such as lava placement can be reduced in lucky worlds.

  • Structure generation can be enhanced through configurable hooks.

Mobs and Spawning

  • Hostile and passive spawn logic can be biased depending on luck state.

  • Variants such as zombie types, slime sizes, and spider behaviors are influenced.

  • Spider jockeys become more likely in unlucky mode.

  • Sheep color bias is adjusted, including rare outcomes under lucky conditions.

  • Mob pathing and animal behavior can shift subtly based on world state.

Loot, Drops, and Progression

  • Chest loot is post-processed when opened, allowing dynamic modification of rewards.

  • Villager trades are biased toward better or worse outcomes depending on luck type.

  • Fishing results can be influenced toward treasure or junk.

  • Block drops, entity drops, and experience gain can be individually enabled or disabled through gamerules.

  • Special drop logic can alter outcomes such as gravel producing flint or leaves producing apples when enabled.

  • Mineshaft generation can be enhanced to guarantee loot-bearing chest minecarts in lucky mode.

Combat and Projectiles

  • Player melee, critical hits, and looting mechanics can be influenced by luck state.

  • Projectile behavior is adjusted, including arrows receiving improved aim correction in lucky mode.

  • End crystal and End-related projectile interactions receive enhanced performance bias in lucky states.

  • Hostile projectile accuracy (ghasts, blazes, witches) is reduced in lucky mode to make combat more forgiving.

Movement and Survival Systems

  • Subtle parkour assistance can adjust landing trajectories toward valid blocks to reduce frustrating falls.

  • Fishing hooks behave more consistently in PvP interactions.

  • Hazard evasion reduces accidental deaths near fire and lava in lucky mode.

  • Fire damage duration can be reduced under favorable conditions.

  • Eye of Ender behavior can be slightly stabilized for more predictable travel.

Configuration and Control
The mod provides extensive gamerule-based configuration, allowing each system to be enabled or disabled individually. Key options include:

  • World and generation systems (ore generation, weather, structures)

  • Mob and spawn systems

  • Loot and drop systems

  • Combat and projectile systems

  • Survival and movement systems

Some impactful systems, such as hostile spawning and experience modification, are disabled by default to prevent unintended balance disruption unless explicitly enabled.

Debug and Commands

  • /lucktype lucky | /lucktype unlucky (primary control)

  • Strict validation prevents invalid states

  • Debug entities available for testing mob and projectile behavior with short lifespans


Best Possible Luck is designed for players who want Minecraft to feel like it has a “mood” rather than pure randomness. Every system remains recognizable, but outcomes consistently lean toward luck-driven narratives instead of neutral probability.

Project description from CurseForge.

Pick your setup

Impossible Luck by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

1 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

Impossible Luck versions and loaders

1 of 1 releases match

Looking for an older file? The official CurseForge project page is in Resources.