HardGrind

HardGrind is a singleplayer discipline mod for Fabric 1.21.9. It removes every shortcut that could ruin your grind — no /op, no /gamemode, no cheating. Even in singleplayer, you play by the same rules as on a real public survival server.

Main Features

OP is dead: All operator permission checks always return false.

Command lockdown: Blocks /op, /deop, /gamemode, /give, /tp, /summon, /effect, /xp, /enchant, /locate, and /gamerule.

Permanent survival: Automatically switches players back to Survival mode every tick if they somehow escape.

Lightweight: No configuration, no UI, no nonsense — just a strict singleplayer survival environment.

Intended Use For players who want the real grind experience in singleplayer — no temptation, no exceptions. Perfect for those training for multiplayer servers or challenge worlds.

Extra-hardening (brief) For stronger protection against casual bypassing, it is recommended to secure the world’s ops.json so operator entries cannot be persisted. Disabling the mod will bypass its protections; file-level hardening makes casual tampering harder but cannot stop someone with full filesystem/admin access.