pvpOption

Each player opts in to PvP with a single command, and the flag is stored per player by UUID so it survives restarts. A hit lands only when both attacker and defender are flagged; a swing at an unflagged player is cancelled and the player is told why. Admins can force a player's flag off or lock a troublemaker out of PvP entirely, and a server-wide switch turns the whole system off for everyone at once.

The mod runs on the server alone and works on Fabric and NeoForge, with Paper, Spigot, Bukkit and Purpur listed as server platforms. Files cover game versions 1.21 – 26.3 across 17 release versions, and Fabric API is optional. Released under the MIT License, the source code is open source and was first published on 2026-03-25, last updated on 2026-09-23. The latest Fabric and NeoForge files are 1.5.5 for 26.3, dated 2026-09-23.

Players who fight enter a short warmup before combat starts, so no one is ambushed the moment the flag goes on. A valid hit starts a combat timer for both players, and during it a player cannot unflag, which keeps fights honest. The action-bar HUD shows the current state, the warmup countdown, PvP Active and the remaining cooldown.