Nova | Sub-AntiCheat: Hybrid Protection for Minecraft 1.21+ Servers
Running a modern Minecraft server means dealing with an ever-evolving landscape of hacked clients, subtle cheat modules, and the added complexity of cross-platform play. NovaAC steps into this space as a sophisticated hybrid anticheat designed specifically for Minecraft 1.21 and above, offering a unique blend of packet analysis, server-side simulation, and adaptive heuristics that works across both Java Edition and Bedrock players connecting through Geyser. Whether you are looking for a robust support layer to complement your existing anticheat or a standalone solution with built-in moderation tooling, NovaAC delivers a comprehensive package that addresses gaps many server administrators face daily.
A Dual-Platform Approach to Cheat Detection
Most anticheat plugins treat Bedrock players as an afterthought, applying Java Edition logic to Geyser-translated packets and generating waves of false positives. NovaAC takes a fundamentally different approach. It includes dedicated Bedrock-specific checks for kill aura, reach, velocity, auto-clicker, aim assist, speed, fly, Jesus, no-clip, timer manipulation, and scaffold behavior. Each check accounts for the quirks of mobile touch controls, console controller input, and the translation layer Geyser introduces. On the Java side, packet-level analysis digs deep into transaction-aware timing, velocity tracking, and packet order validation, creating a detection engine that understands the nuances of both platforms rather than forcing one-size-fits-all rules.
Engine Design and Performance Philosophy
NovaAC is built with server performance in mind. Heavy validation paths are selectively offloaded to asynchronous processing, reducing main thread pressure during peak player counts. The simulation engine predicts movement while factoring in environmental tags like ice, slabs, stairs, and liquids, alongside velocity changes and teleport awareness. This means a player sliding on packed ice will not trigger false speed flags simply because the server understands the physics involved. Reach compensation goes even further, adjusting for ping, movement history, knockback state, hitbox dimensions, and desync risk. The system also scales its detection sensitivity based on TPS drops, preventing false ban waves when server performance dips during heavy redstone activity or entity buildup.
Combat Detection: Java Edition
The combat module represents one of NovaAC's most polished layers, covering virtually every known cheat vector in player-versus-player scenarios. KillAura detection analyzes target switching patterns, aim consistency, rotation acceleration, and correlation with movement data. Reach checks validate interaction distance against historical target positions and entity-specific hitbox dimensions. Velocity analysis examines both horizontal and vertical knockback using transaction-aware tracking and percentage pattern classification. AimAssist detection identifies suspicious smoothing, acceleration curves, duplicate look packets, and non-human rotation behavior. AutoClicker checks go beyond simple CPS limits, examining interval statistics, variance patterns, and artificial timing signatures while intelligently filtering digging actions. Additional layers cover AutoBlock, AutoArmor, AutoTotem, CrystalAura, FastEat, FastBow, InventoryCombat, MultiAura, Hitbox manipulation, BackTrack, WTap, MaceDMG, PotionSpoof, and BreakDelay, forming a comprehensive combat integrity suite.
Movement Checks Across Editions
Movement validation in NovaAC relies on server-side prediction with axis-based uncertainty handling. The Fly and Speed checks understand ice physics, slab and stair interactions, liquid movement, and velocity influence. Blink detection identifies packet buffering and burst movement signatures, while Jesus and Scaffold checks validate liquid movement and illegal block placement. Step, FastClimb, Phase, and NoClip modules protect against vertical and collision exploits. Timer analysis monitors client tick rate and timing accumulator consistency. Specialized checks cover Elytra flight, boat movement, GroundSpoof, AntiVoid, AirJump, LongJump, and HighJump. The system also includes pathing analysis that can flag suspicious automated movement patterns reminiscent of Baritone-style mining bots. An AntiDisabler layer protects the engine itself from common disabler techniques that attempt to blind other anticheat plugins.
For Bedrock and Geyser players, each movement check is adapted to account for mobile and console input patterns. BedrockFly, BedrockSpeed, BedrockJesus, BedrockNoClip, BedrockTimer, and BedrockScaffold all apply platform-aware compensation, dramatically reducing false positives that typically plague cross-platform servers. This dual-layer approach means administrators can confidently enable automatic punishments for both Java and Bedrock players without worrying about kicking legitimate mobile users for movement quirks they cannot control.
Block, World, and Exploit Protection
Beyond combat and movement, NovaAC monitors world interaction integrity. Nuker detection analyzes block break rates with hardness-aware logic that accounts for tools, haste effects, and server tick rate. FastBreak, GhostHand, and BlockReach checks prevent illegal breaking speeds and interaction through solid barriers. FastPlace, ImpossiblePlace, and LiquidAirplace validate block placement behavior, while Scaffold and TowerBuild detection identifies automated construction patterns. Xray protection layers examine mining patterns and resource targeting behavior. On the exploit side, AntiReducedDebugInfo prevents debug information manipulation, Cinematic and Macro detection flags non-human camera and input patterns, and comprehensive packet order validation catches BadPackets, duplicate packets, and sequencing anomalies. A StatisticalAnomaly module combined with TickBase and Trust scoring creates a behavioral risk assessment layer that catches subtle, previously unknown cheat patterns.
Built-in Staff Utilities and Replay System
One of NovaAC's standout features is its integrated visual replay system. When suspicious behavior is logged, staff members can review a ghost replay of the incident directly in-game, seeing exactly what the anticheat detected without relying on third-party recording tools. The plugin hider feature obscures plugin and command information from common probing attempts, keeping your server setup less visible to potential attackers. Punishment tools support kick, ban, and tempban workflows with configurable banhammer behavior. A staff manager GUI centralizes reports, inspection tools, logs, and moderation actions. Inventory and ender chest viewers let administrators inspect player items in real time, while a command logger tracks administrative actions for accountability. Optional Discord integration and statistics support round out the moderation ecosystem.
For server owners who prefer streamlined plugin management, NovaAC integrates smoothly into modern launcher workflows. Many administrators find that using a flexible launcher like foxygame.net simplifies the process of keeping anticheat plugins updated, as the launcher's built-in mod download menu provides quick access to the latest versions without manual file hunting.
Staff Commands and Permissions
| Command | Description |
|---|---|
| /nova | Opens the administrative GUI with subcommands: gui, alerts, reload, spectate, unspectate, reset, info, banhammer |
| /novaac | Alternate administrative command |
| /banhammer | Visual punishment tool with selectable type, duration, and preset reasons |
| /startspectating [player] | Begin stealth monitoring mode |
| /stopspectating | Stop spectating a player |
| /invsee [player] | View a player's inventory |
| /ecsee [player] | View a player's ender chest |
Permissions follow a straightforward hierarchy. The novaac.admin node grants full access to all commands and tools. The novaac.alerts permission allows staff to receive detection alerts in chat. A bypass permission, novaac.bypass, defaults to false and should be assigned with caution.
Installation and Requirements
- Java 21 or higher
- Minecraft 1.21 or higher
- Server software: Spigot, Paper, or compatible fork
- Strongly recommended: PacketEvents 2.7.0 or higher for advanced packet analysis
- Optional: ProtocolLib 5.1.0 or higher for extra packet interception
- Optional: Geyser and Floodgate for full Bedrock player support
- Optional: AdvancedBan for compatible punishment commands
Installation is straightforward. Place the NovaAC.jar file into your server's /plugins folder, ensure PacketEvents is installed for maximum accuracy, restart the server, and configure any optional integrations. The plugin processes all detection logic, violation tracking, replay data, and log files locally on your server. Anonymous usage metrics may be sent through bStats, but server owners can opt out at any time by editing the /plugins/bStats/config.yml file.
Why NovaAC Fits Your Server
NovaAC excels in a role that many servers desperately need but few anticheats fill properly. If you already run GrimAC, Vulcan, or another primary anticheat, NovaAC adds the Bedrock handling, replay tools, plugin hiding, and moderation utilities those solutions often lack. If you need a standalone anticheat, its broad detection coverage across combat, movement, world interaction, packet abuse, and exploit behavior makes it a capable primary option. The dual-platform support means you no longer need separate rule sets for Java and Bedrock players. The included staff tooling reduces plugin bloat by consolidating inspection, spectating, inventory viewing, and punishment workflows into one package. Flexible deployment, adaptive false positive filtering, and TPS-aware scaling make NovaAC a practical choice for servers of any size, from small community survival worlds to large minigame networks.
Final Thoughts
Choosing an anticheat is about trust, accuracy, and the tools that come with it. NovaAC builds that trust through transparent engine design, platform-aware detection, and a feature set that extends well beyond simple cheat flagging. The replay viewer, staff GUI, plugin hider, and cross-platform compatibility create an ecosystem where moderation becomes more efficient and less error-prone. Whether you are battling sophisticated Java Edition cheat clients or trying to fairly accommodate Bedrock players on your Geyser-enabled server, NovaAC provides the adaptive intelligence and practical tooling to keep your gameplay fair without punishing legitimate players for circumstances beyond their control. Test your punishment settings thoroughly, join the community Discord for setup guidance, and give your server the hybrid protection it deserves.