Plugin Grim Anticheat

Grim Anticheat for Minecraft servers

Grim Anticheat is an open source plugin that protects your Minecraft server against movement and combat cheats by simulating every legitimate player action in real time. Fully async and multithreaded, it scales smoothly with many players while keeping latency low. Its predictive engine tracks precise values such as reach, timer, speed and knockback to detect abnormal behaviour on versions from 1.8 to 1.21.

Grim replicates the world per player to handle lag and fake blocks, sharply reducing false positives and keeping PvP fair. On BoxToPlay, we integrate Grim so you can focus on gameplay rather than chasing cheaters.