KarmaCore

Each player starts at a configurable base value, and a victory over another player adds to the score while a defeat subtracts from it. A player who keeps defeating the same opponent triggers a cooldown of 300 seconds before that repeat counts. Five configurable default levels attach effects such as Speed or Slowness to the score, and each level's reward is granted once by default, which prevents repeated reward farming. Administrators can turn repeated rewards on in the configuration.

The mod includes a revenge system: a defeated player can be marked as a target, which gives a bonus when that target is beaten later and gives the defeated player a reason to return. Karma items reward players through the same score levels. The karma command, with the alias k, handles set, add, remove, reset, reload and giveitem actions, and it respects permissions when suggesting completions. KarmaCore requires Fabric API on Fabric. It is published for Fabric, Forge and NeoForge and for the Paper and Spigot server platforms, across builds for 1.19 – 26.3. The code is all rights reserved and is not open source.