Grief Prevention

Grief Prevention

AUTOMATICALLY PREVENTS ALL FORMS OF GRIEF, including build/break, theft, spam, fire, spawn camping, lava and more, so you don't have to undo any damage after the fact. No configuration or database required! Stop responding to grief and prevent it instead. Grief Prevention will solve your grief problems without requiring you to manage a roster of trained administrators, juggle 10 different anti-grief plugins, take away cool standard game features, publish a training manual / tutorial for players, or add explanatory signs to your world. You can also choose to integrate PvP elements into build design to finally get a PvP experience befitting a sandbox game about creativity.

Grief Prevention stops grief before it starts automatically without any effort from administrators, and with very little (self service) effort from players. Solve all your grief problems with a single download, no database, and no configuration step.

Official Servers (Try it for yourself!)

You can experience this plugin for yourself (as a player) by joining any of these public servers. :) We maintain these servers personally, which helps us catch bugs and spot opportunities for new features and improvements. Have fun!

Downloads by Minecraft Version

Please choose the version that matches your Minecraft server version! :)

Feature List

Yes, everything is customizable. See Setup and Configuration.

  • No database or world backups required.
  • Extremely efficient CPU / RAM usage.
  • Land claims are easy to manage.
    • New players get automatic claims around their first chests.
    • Players who ask for help in chat get an instant link to a demonstration video.
    • Resizing claims and creating new claims is done with ONLY the mouse, no slash commands.
    • When a player appears to be building something nice outside his claim, he's warned and shown his claim boundaries.
    • Claim boundaries are easy to see, and don't require any client-side mod installation.
    • Extremely easy-to-remember, single-parameter slash commands for giving other players permissions.
    • Claim subdivision and granular permissions are available to organize towns and cities. Watch this video.
  • It's IMPOSSIBLE to grief a land claim. Watch this video.
    • No building or breaking.
    • No stealing from ANY containers.
    • No sleeping in beds.
    • No button/lever usage.
    • No adjusting redstone repeaters.
    • No pushing blocks in with pistons.
    • No pulling blocks out with pistons.
    • No TNT damage.
    • No creeper damage.
    • No damage from TNT cannons.
    • No explosive damage from other plugins, like Extra Hard Mode or Magic Spells.
    • No enderman block changes.
    • All doors may be automatically locked (optional, see config file).
    • No killing or luring animals away.
    • No stealing water (e.g. buckets).
    • No trampling crops, by players, animals, or monsters.
    • No building overtop, all claims reach to the max build height.
    • No placing or breaking paintings / item frames.
    • Fluids will not flow into a claim from outside.
    • No placing blocks via TNT/Sand/Gravel cannon.
    • No placing portals without build permission (even by walking through a portal in another world).
  • Pets and death loot are protected.
    • Players can't pick up what another player dropped on death without permission.
    • All types of pets are protected everywhere, even outside of land claims (can be configured per-world).
  • Excellent anti-spam protection
    • Warns, then mutes, then may kick or ban spammers (configurable - you choose).
    • Most spammers get only one message out before they're muted.
    • Blocks server advertising (IP addresses).
    • Blocks repeat message spam.
    • Blocks ASCII art (ex. Nyan Cats) spam.
    • Blocks similar message spam.
    • Blocks unreadable (gibberish) message spam.
    • Blocks CAPS.
    • Blocks macro spam (very different messages in quick succession).
    • Blocks login/logout spam, even when the spammer has multiple accounts.
    • Blocks death spam.
    • Blocks bot team spam.
    • Blocks slash command spam, including /tell, /emote, and any more you add.
  • Wilderness Protection and Rollback
    • Fire doesn't spread or destroy blocks.
    • Creepers and other explosions don't destroy blocks above sea level.
    • TNT doesn't destroy blocks above sea level.
    • No planting trees on platforms in the sky ("tree grief").
    • Instant, point and click nature restoration for not-claimed areas. Watch this video.
      • Insanely easy and fast fixes for penises, swastikas, and anything else unsightly.
      • Point at what you don't like and click, and it's fixed. Even from far away.
      • Never accidentally changes blocks inside land claims.
      • No need to investigate who built it, who broke it, or when they did it.
      • Doesn't matter if the griefer built with "natural" blocks, it will still be fixed.
      • No database.
      • No backups.
      • No chunk regeneration (it's dangerous for technical reasons).
      • Fixes bad chunk generations, like floating islands. It will be better than new.
      • Fills holes, even next to water to correct big spills.
      • Smooths noisy terrain.
      • No griefer construction is safe. If it's unnatural enough to be noticeable by players, it will be removed or filled-in.
  • Land claims can't be used as a griefing tool.
    • It's impossible to get a player "stuck" inside a land claim.
    • Land claims beyond the first require a golden shovel.
    • Minimum claim size prevents sprinkling small claims to annoy other players.
    • Max claim allowance grows with time played on the server, and can't be cheated by idling.
    • A simple administrative slash command will instantly remove all of a griefer's claims, no matter where they are.
  • Catches clever griefers.
    • Enhances the /ban command to ban ALL a griefer's accounts (not just his IP address).
    • Logs sign placements.
    • /SoftMute command to shut down chat trolls without them knowing they're beaten.
  • PvP Protections.
    • When PvP is off, no setting fire or dumping lava near other players.
    • Absolutely bullet-proof anti-spawn-camping protection including bed respawns, which requires no configuration.
    • No logging out, stashing items, or using plugin teleportation to escape combat.
    • Optional siege mode, to answer players who hide in their claimed houses to avoid combat.
  • Supports your server growth.
    • Permit players to exchange server currency for claim blocks (requires configuration and other plugins).
    • Grant claim blocks automatically for votes, donations, etc (console command provided, other plugins required).

The Manual

More Great Plugins!

  • Anti-XRay
    • Limits how quickly players can mine valuables, based on their play time / values mined ratio.
    • Keeps your valuables in the ground, so non-cheating players can find them (unlike ore loggers).
    • Practically free to run, unlike the tremendously expensive Orebfuscator.
    • Most legit players won't notice, but xrayers will ragequit and move on.
  • Population Density
    • Automatically assigns new players to wilderness where they'll find other new players and plenty of space, wood, and ore.
    • Optional teleportation system which can't be abused by players to escape combat or save them from being lost.
    • Login queue to guarantee fairness when the server is full.
    • Optional reserved spots for administrators.
    • Automatically removes idle players when the server is nearly full.

Project Status and Future

From BigScary: I've re-joined the project. Yes, I know many of you had a very bad experience with the beta builds, there were many bugs. We've rolled-back the buggy features which were added after I left the project, and then I continued the project from there as if I hadn't left in the first place. So far, I've added UUID support, greatly improved performance during play time and boot time, blocked new grief strategies made possible by changes to the game since I last worked on the project, cleaned up the config files, and tweaked several features for much improved player and administrator experiences. I've even added some new anti-grief features.

My current plan is to wait for a new mod platform to emerge ( is looking promising), then build a new grief prevention plugin for that new platform. Until then, I will continue working on this project as I always have. No other project I've ever worked on in my career as a software engineer compares to GriefPrevention's mix of fun, challenge, and importance to the community.

How to Upgrade to 8.0+ Builds

Starting with GriefPrevention 8.0.3, you can keep any claims and player data that was created by the broken "beta" builds. You just have to customize your config file again (a new config.yml will be generated in a folder named "GriefPreventionData").

Starting with GriefPrevention 8.1 which supports UUID (player name changes), GriefPrevention will do a one-time data update during boot. This can take a very long time - up to 1 second for each player who has ever played on your server. This is because GP has to contact Mojang via the interwebs to get the correct UUID for each player. At this time, it seems this process works well for offline mode and online mode servers, but there are mixed reviews for the hybrid "Bungee Cord" configuration (try it, but back-up first!). In any case, please back up before you take on this major update. If you have any problems, restore your data from backup, use the older version of GP which was working for you for now, and get your logs to me so I can investigate. :)

Coming Soon

These are my top priorities right now. It's not a complete list of everything I plan to do. :)

  • More performance tweaks.
  • Update /RestoreNature for new block types in 1.8.
  • Update /RestoreNature to handle water better.
  • Update /RestoreNature to regrow trees.
  • Fix killer bunnies not being damageable in other players' land claims (because Bukkit labels them "animals", not "monsters").
  • Add an abridged, easy-to-read chat log which auto-deletes its old data.
  • A /ignore command for players.
  • A /separate command to force two players to ignore each other.

Please Vote for Grief Prevention

I've just posted Grief Prevention on the Spigot site. If you love GP, please take a couple of minutes to give GP your rating and leave a short review. Better rating and positive reviews will help server owners who look for plugins on the Spigot site make the safe choice (GP) instead of downloading something sketchy or incomplete. :) Thanks so much for all your support!

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  • Avatar of Jikoo_K Jikoo_K Jan 30, 2015 at 23:12 UTC - 0 likes

    Would it be possible to have a warning and confirmation for players trusting all in all claims? I've had a couple users accidentally /trust all while off by a couple blocks - seems to be confusing for users who aren't yet familiar with the plugin.

    EnchantedFurnace: Because pickaxes can only do so much.

  • Avatar of GodsDead GodsDead Jan 30, 2015 at 21:06 UTC - 0 likes

    @bigscary: Go

    Its STILL going! Im not even joking, I started it at 18:00 GMT Jan 29th and now its 21:06 on the 30th! When you say logs, do you mean the main server log? If so Ill keep it and upload it if it ever finishes! This is also running on a fresh server I setup for this specific conversion, on its own dedicated machine, so its not a resouce issue, its taking between 60 seconds to 120 seconds per player lookup, and as its not alphabetical, there are no ID's or numbers I have no idea how far its got to go!

    Last edited Jan 30, 2015 by GodsDead
  • Avatar of bigscary bigscary Jan 30, 2015 at 19:24 UTC - 1 like

    @GodsDead: Go

    Thanks for the feedback, I'll look into this. Did you keep your logs from the last attempt? If so, please consider sharing them so I can look at what's taking so long.

    @Max_S: Go

    All the latest versions have a cooldown period for that message. Maybe an update will fix your issue? Even before the cooldown was introduced, the only time a player would be spammed is if he alternating building inside/outside of his claim very rapidly.

  • Avatar of Max_S Max_S Jan 30, 2015 at 15:31 UTC - 0 likes

    Hello, is there a way for an individual player to disable this feature: "When a player appears to be building something nice outside his claim, he's warned and shown his claim boundaries." It can be annoying if a player wants to build in the wilderness or has reached a claimblock limit, but the chat log and left side of the screen is constantly "Other players can build here, too. Consider creating a land claim to protect your work!".

  • Avatar of GodsDead GodsDead Jan 30, 2015 at 10:23 UTC - 0 likes

    @bigscary: Go

    Yeah I know about this, This isn't the reason, WorldGuard opens up to a LOT of plugins, its compatible across the board, for instance I can regenerate or paste a backup of a WorldGuard Region, There are flags, like Setting Welcome Messages to tell people they are in a specific region, With worldguard I can have outlines of islands on my Live Map, GriefPrevention allows only square boxes, the list is quite long but what It boils down to is the amount of flags & compatibility across board for WorldGuard, Most of the works done in that plugin I set in the ticket to create custom flags, maybe this is for more of a power user thing!

    Anyway, my main issue isn't even that, I still haven't been able to convert from 7.8 to the latest version, the time it takes is insane, I have a local server setup where im testing plugins for 1.8 and im running the GriefPrevention conversion from 7.8 database to 10.5.7, I have about 20,000 users and this latest 1.8 version of GriefPreventon is still going after 10 hours running, it seems to still only be converting capitalization for names at present! Heres a very small snippet:

    [10:09:39 INFO]: GriefPrevention: sabercj --> SaberCJ
    [10:09:48 INFO]: GriefPrevention: mantorio --> Mantorio
    [10:10:00 INFO]: GriefPrevention: annamae2002 --> AnnaMae2002
    [10:10:11 INFO]: GriefPrevention: raphaeldangelo --> RaphaelDAngelo
    [10:10:33 INFO]: GriefPrevention: scorchingfire --> ScorchingFire
    [10:10:50 INFO]: GriefPrevention: blakeevans228 --> BLAKEEVANS228
    [10:11:05 INFO]: GriefPrevention: jareththeking --> Jareththeking

    The fact it takes so long to do this, means by the time I have tested this locally my entire live database is completely different as people are playing on the server, I would have to shut my live server down for 2 days! This is my third GriefPrevention conversion test from 7.8 > new version, a few versions back one of your conversions only took about 20 minutes, and previously be first attempt took 17 hours. What is going on?

  • Avatar of bigscary bigscary Jan 29, 2015 at 19:16 UTC - 0 likes

    @GodsDead: Go

    So you have areas where you want to allow people to build, but not claim their work to protect it? You can do that without world guard flags - just create a big admin claim (/adminclaims), then /trust public in it.

    Last edited Jan 29, 2015 by bigscary
  • Avatar of bigscary bigscary Jan 29, 2015 at 19:15 UTC - 0 likes

    @switorik: Go

    I don't have the same problem on my server - maybe try updating your spigot to the latest? It could be a spigot bug.

  • Avatar of GodsDead GodsDead Jan 29, 2015 at 10:05 UTC - 0 likes

    Request - custom worldguard flags for setting if people can claim in that area or not

  • Avatar of switorik switorik Jan 28, 2015 at 22:54 UTC - 0 likes

    Following up on the givepet issue. I have no errors or any info other than its not working. I know thats not a lot of help but I really have nothing.

    To test it, I spawned a wolf, tamed it, typed /givepet <name of an online player> and right click it. The wolf sits down and the pet is not transferred. (I tested tamed ocelots, wolves, and horses).

  • Avatar of bigscary bigscary Jan 28, 2015 at 22:42 UTC - 0 likes

    10.5.7 Updates

    • Made expanding chest claims a little easier for new players.
    • Fixed database connections going stale on some servers.
    • Fixed a UUID migration bug for database mode servers upgrading from very specific earlier versions.

    Please take a few moments to vote for Grief Prevention! :) We're only 35 total 5-star reviews away from being the top plugin on the spigot site, which is absolutely a reachable goal. Thanks for your support!

    @CloakedAlien: Go

    I think I fixed this issue in the new build. If you see it again, please share the new error message (which now includes a stack trace). :)


Date created
Dec 14, 2011
Last update
Jan 28, 2015
Development stage
GNU General Public License version 3 (GPLv3)
Curse link
Grief Prevention
Recent files
  • R: 10.5.7 for 1.8.1 Jan 28, 2015
  • R: 10.5.6 for 1.8.1 Jan 27, 2015
  • R: 10.5.5 for 1.8.1 Jan 23, 2015
  • R: 10.5.4 for 1.8.1 Jan 20, 2015
  • R: 10.5.3 for 1.8.1 Jan 17, 2015