Grief Prevention

Grief Prevention

AUTOMATICALLY PREVENTS ALL FORMS OF GRIEF, including build/break, theft, spam, fire, spawn camping, lava, treetopping 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!

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 using crafting equipment.
    • 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.
    • No trampling crops, by players, animals, or monsters.
    • No growing trees inside the claim by planting outside.
    • 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.
  • Excellent anti-spam protection
    • Warns, then mutes, then may kick or bans (configurable) spammers.
    • Most spammers get only one message out before they're muted.
    • Almost no false positives.
    • Blocks server advertising.
    • 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 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.
    • Griefers can't dump water or lava above sea level, unless they claim the land first.
      • The fluid will not flow out of the claim.
      • Deleting the claim removes the fluid to prevent spillage.
    • 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.
    • 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.
    • It's impossible to get a player "stuck" inside a land claim.
    • 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.
    • Optionally, logs whispers and opens them to administrative eavesdropping.
  • PvP Protections.
    • When PvP is off, no setting fire or dumping lava near other players.
    • Absolutely bullet-proof anti-spawn-camping protection, 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.
  • EnderHoppers
    • Allows the use of Hoppers with EnderChests inside a Claim
    • Items are taken from and added to the EnderChest inventory of the Claim owner
    • Supports The Better Ender Chest Plugin

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.

Because all of the Bukkit staff have simultaneously quit the project, it's extremely unlikely that Bukkit will ever be updated to support Minecraft 1.8 or later servers. Also, there's a legal issue which resulted in all craftbukkit builds being removed from the internet in general. The law is slow, so that makes future bukkit versions even less likely.

Due to these circumstances, 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. :)

You must login to post a comment. Don't have an account? Register to get one!

  • Avatar of ClimacticGaming ClimacticGaming Oct 25, 2014 at 01:48 UTC - 0 likes

    @AeroEden: Go

    Thank you! I will do this and see how it goes. Will report back hopefully with success.

    Much appreciated sincerely for you assistance.

  • Avatar of AeroEden AeroEden Oct 25, 2014 at 01:32 UTC - 0 likes

    @ClimacticGaming: Go

    Just hold the shovel and type /tool info

    Then you can right click on the block in world to see its id, you can do this multiple times no need to re-type the command

    And yeah its item id was different

    Last edited Oct 25, 2014 by AeroEden
  • Avatar of ClimacticGaming ClimacticGaming Oct 25, 2014 at 01:14 UTC - 0 likes

    @AeroEden: Go

    Thank you for doing this. Do you know what you did to make the shovel show the block id? Luckily I have world edit. Also...was this number different from the item id? Just curious. What was the item id before you placed it?

    Thanks so much for all your help. I owe ya one!

  • Avatar of AeroEden AeroEden Oct 25, 2014 at 00:02 UTC - 0 likes

    @ClimacticGaming: Go

    Had some spare time to download a 1.7.10 pack and get cauldron up and running :)

    Yeah have no idea why WAILA isn't showing the id of the block

    Anyway what I did is install worldedit and and assigned the info command to a shovel using /tool info, then any block you click on it gives information (check attached image on this post)

    As you can see it shows the block id after the # and the meta data is in the [] but you should be using id:* anyway :)

    Last edited Oct 25, 2014 by AeroEden
    • Worldedit.png
  • Avatar of Weakenedsoul Weakenedsoul Oct 24, 2014 at 23:04 UTC - 0 likes

    Im getting "An Internal error occured while attempting to perform this command." when trying to use commands such as /trust or /adjustbonusclaimblocks any idea why this could be happening?

    • EDIT*- Figured it out nevermind!
    Last edited Oct 24, 2014 by Weakenedsoul
  • Avatar of Bobcat00 Bobcat00 Oct 24, 2014 at 22:49 UTC - 0 likes

    @ClimacticGaming: Go

    ChestShop has the /iteminfo command which shows you info about the item you're holding. Prism has the /what command which does something similar.

  • Avatar of dutchrastacraft dutchrastacraft Oct 24, 2014 at 22:45 UTC - 0 likes

    @bigscary: Go

    Indeed, sadly enough :/ Any ideas (server sided) how I can improve my server a little more? And no, I'm sorry, I don't use flatfile :/

  • Avatar of bigscary bigscary Oct 24, 2014 at 22:37 UTC - 0 likes

    @ClimacticGaming: Go

    This is a long shot, but I used to work on a plugin called TekkitCustomizer. It had a /blockinfo command which would give you the id/data value for both what's in your hand and the block you're pointing at. The guy I handed it off to seems to have abandoned the project, but MAYBE an old build will still work, at least for this one command.

    @dutchrastacraft: Go

    Thanks! Sadly, looks like no further improvements. I'm tempted to code specifically to make that pct tick column look better, but realistically it's probably best for me to focus on more important stuffs. Hey, with all those players... do you happen to have a lot of land claims in flat file mode? I'm looking for a big collection of flat file mode claims for the boot performance work.

  • Avatar of dutchrastacraft dutchrastacraft Oct 24, 2014 at 22:20 UTC - 0 likes
  • Avatar of ClimacticGaming ClimacticGaming Oct 24, 2014 at 21:11 UTC - 0 likes

    @bigscary: Go

    I've tried searching, just to start out for the Carptener's Door and I can't find it. Is there no other way possible to get block ids? This is crazy that no one else uses mods and protects modded doors and such? lol...there has got to be a better way to see block ids.


Date created
Dec 14, 2011
Last update
Oct 24, 2014
Development stage
GNU General Public License version 3 (GPLv3)
Curse link
Grief Prevention
Recent files
  • R: 8.6 for CB 1.7.9-R0.2 Oct 24, 2014
  • R: 8.5.2 for CB 1.7.9-R0.2 Oct 23, 2014
  • R: 8.5.1 for CB 1.7.9-R0.2 Oct 22, 2014
  • R: 8.5 for CB 1.7.9-R0.2 Oct 19, 2014
  • R: 8.4 for CB 1.7.9-R0.2 Oct 17, 2014