🛡️ Mythical AC A lightweight, server-side anti-cheat for Forge 1.20.1. It catches the hacks that show up in packets, and cloaks your world against the ones that don't. No client mod needed — vanilla players just join.
✨ What it does 🏃 Movement checks Speed · Blink / Warp / teleport · Fly (hover & illegal ascent) · HighJump · Step · Spider (wall-climb) · NoSlow · NoWeb · Fastladder · NoFall / GroundSpoof · NoClip / Phase (including through-wall) · BoatSpeed / BoatFly / vehicle Blink
⚔️ Combat checks Reach · KillAura (look-angle, through-wall, and multi-target aura) · AutoClicker (CPS) · experimental aim-snap detection
🧱 Build checks Scaffold · AirPlace / GhostBlocks · FastPlace · place-reach · Nuker / FastBreak
🔨 Escalating punishment Violations build a decaying level, so a stray false positive fades on its own. Confirmed cheaters get rubber-banded → kicked → auto-banned. Kick counts are saved to disk, so "3 kicks = ban" survives relogs and restarts.
🪨 X-ray & freecam cloaking Hides your real ores and buried storage — swapped for the surrounding rock client-side, revealed only when you're right next to them (true occlusion). Floods X-ray with fake ores and winding fake cave tunnels so the real loot drowns in noise. Reveal is keyed to your real position, not the camera — so freecam can't fly out and reveal it either. The world is never actually changed — it's all a client-side illusion that reverts as you approach. ⚙️ Live control — /mythicalac (alias /mac) /mac info — their flags, kicks, and violation levels /mac pardon — clear kicks & unban /mac check <on/off> — toggle any check without a restart /mac obfuscation <fakeores/hide/decoys> <on/off> — flip cloaking live 🧪 Built to avoid false positives Smart grace handling for water, boats, creative ↔ survival swaps, elytra, fast falls, ender pearls, portals, respawns, and explosion knockback.
📥 Installation Drop the jar in your server's mods/ folder. Server-side only — clients don't need it and can be fully vanilla.
⚠️ Honest scope — please read Mythical AC cannot detect client-side render hacks (ESP, tracers, HUDs, purely visual X-ray/freecam). No server-side anti-cheat can — those send no packets to detect. Instead of faking it, Mythical AC cloaks your world so they see nothing useful. Cloaking uses per-block updates, so expect a brief warm-up in new areas and some bandwidth cost with many players (all tunable). Detection thresholds may need tuning for your server. Start lenient and tighten as you watch the logs — /mac lets you adjust everything live. 🔧 Compatibility Minecraft 1.20.1 · Forge · Vanilla-client friendly · No dependencies
