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!

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.
    • 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.
  • 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.
    • 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 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.
    • 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.
    • /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, 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. 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. :)

  • Allow owners to interact with their pets even when in other players' land claims.
  • Protect tamed animals everywhere in non-PvP worlds, with the exception of those left in other players' land claims after the animal's owner logs out.
  • Stop negative splash potion status effects from applying to players who should be protected from PvP. (Damage is already blocked)
  • Look into killer bunnies not being damageable in other players' land claims.
  • Improve boot speed for flat file mode.
  • Prevent nether portal traps.
  • Prevent placing a nether portal in a land claim by building a portal in another world.
  • Fix sand/gravel cannons.
  • Require players to move at least a block after logging in before allowing them to chat (anti-bot strategy).
  • Update /RestoreNature for new block types in 1.8.
  • Update /RestoreNature to handle water better.
  • Update /RestoreNature to regrow trees.
  • Prevent claiming land inside a world guard region unless the claimant has permission to build in the region.

I'm aware there are issues specific to modded (not CraftBukkit or Spigot) servers. I do plan to address those, but I'm waiting for Cauldron to update to 1.8.

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 MPigna MPigna Dec 20, 2014 at 22:57 UTC - 0 likes

    Players seem to be able to place lava on/near players. Can't find this in config. Read somthing on top here about other players not getting to pick up items from other players on death. How do i config this? Would be nice to add in survival.

    Thanks! :)

    DayLightCraft - Survival | KitPVP | CTF

  • Avatar of theory18 theory18 Dec 20, 2014 at 12:06 UTC - 0 likes

    @Perkulator_Time: Go

    Same problem as you buddy..

  • Avatar of flawlessbraz1 flawlessbraz1 Dec 20, 2014 at 02:08 UTC - 0 likes

    How do i disable claims per world?

    Skype:socomftb21david Owner of DavidsCloud

  • Avatar of Perkulator_Time Perkulator_Time Dec 19, 2014 at 23:35 UTC - 0 likes

    I dont get it, I put installed this plugin, the gold shovel doesnt do anything nor does "placing a chest"

  • Avatar of switorik switorik Dec 19, 2014 at 21:36 UTC - 0 likes

    I would like to know if Environmental Vehicle damage can be brought back. We use this often on our server. If it isn't too hard I would really appreciate it.

    I would like to thank you again on keeping this plugin up to date and being involved with us. I can't describe how much I appreciate a dev taking time to talk to the players.

  • Avatar of bigscary bigscary Dec 19, 2014 at 17:20 UTC - 0 likes

    @ridddle: Go

    You make many very good points. I'll see what I can cook up to solve this very frustrating problem.

    Claim limits are coming back.

    @Cra2ytig3r: Go

    Thanks, I'll look at that as well. :)

  • Avatar of ridddle ridddle Dec 19, 2014 at 11:21 UTC - 0 likes


    Oh and BTW, will you be re-adding claim limits or do you need more people complaining? Haha. :D

    @Cra2ytig3r: Hey, neat stuff!

  • Avatar of Cra2ytig3r Cra2ytig3r Dec 18, 2014 at 21:26 UTC - 0 likes

    @ridddle: Go

    For portals I use this a plugin called Direct Portals. Maybe an idea there to help.

  • Avatar of ridddle ridddle Dec 18, 2014 at 19:32 UTC - 0 likes


    Putting a Netherrack block and air pocket would work I guess. Just make sure to go one block further in all directions (but down) and remove/replace lava. Lava pockets are rather common in Nether, if players get buried inside a mountain, there is a chance they will get rescued into an instant molten death trap. :)

    Portals: Well, we decided to simply prevent Minecraft from doing a nice thing for players which is looking for open area to place the portal and we’re doing the most logical thing which is translating coordinates perfectly, 1:8. This also makes it so that players cannot get lost… vanilla can spawn a portal in a way that when you want to use it to return you can end up 1024 blocks away from your original portal.

    This also means that we need to make an air pocket and remove that lava like I mentioned above. And I guess portal being placed inside of Nether’s mountain is much safer than out in the open… fewer Ghasts and lava streams forming. :)

    Whenever player tries to open a portal that would end up in someone’s claim (that they don’t have permissions for), we place a sign into portal’s frame explaining what went wrong (sign has a colored name and we don’t drop a sign item when a sign like that is broken to prevent farming signs…). Investigation tool was rewired to provide info if portal can be opened in that spot or would it intersect someone’s claim to reduce guesswork.

    What else… I guess we also allow people to manually build portals on the same x/z and different y to allow for fast vertical travel in their huge overworld tower.

    One thing that threw a monkey wrench in our perfect math was 1.7 and its biggest portals. 23 by 23 in Nether is 168 Overworld blocks… which can fit many portals. To be honest I don’t have a perfect solution there. People who play with portal size and placement (multiple in 1 spot) were told to expect some erased portal frames here and there.

    Last edited Dec 18, 2014 by ridddle
  • Avatar of modzmarvin modzmarvin Dec 18, 2014 at 18:38 UTC - 0 likes

    <<reply 2424799>>

    Like a charm. TYVM :)

    The cow goes "baaa"


Date created
Dec 14, 2011
Last update
Dec 18, 2014
Development stage
GNU General Public License version 3 (GPLv3)
Curse link
Grief Prevention
Recent files
  • R: 9.6 for 1.8.1 Dec 18, 2014
  • R: 9.5 for 1.8.1 Dec 17, 2014
  • R: 9.4.1 for 1.8.1 Dec 16, 2014
  • R: 9.4 for 1.8.1 Dec 14, 2014
  • R: 9.3 for CB 1.8 for 1.0.0 Dec 10, 2014