LocalRealms

Spin up your own custom Minecraft worlds without leaving the game. LocalRealms lets you create, save, and hop between as many worlds as you want — each with its own inventory, gamemode, and rules.

What It Does

• Create worlds on demand. Flat creative sandboxes, empty void skyblocks, or fresh survival overworlds — all from a single command.
• Every world is its own save. Your inventory, armor, offhand, ender chest, XP, hunger, health, and gamemode are remembered separately for each world. Step into a creative flatland, build, then teleport back to your survival world with everything exactly as you left it.
• Worlds stick around. Anything you create is saved and automatically reloaded whenever the server restarts.
• Pick the default gamemode per world. Choose Survival, Creative, or Adventure when you create it — first-time visitors spawn in that mode.
• Sensible gamerule defaults per style. Flat and Void worlds have PvP off and freeze time, weather, and mob spawning. Normal worlds behave like vanilla.
• Public or op-only. Lock a world down so only ops can visit, or open it up to everyone. The server's default world_nether and world_end are op-only by default (portal travel still works — the lock only affects /worldcreator join); edit worlds.yml if you want to open them up.

Requirements

• A Paper server (or Paper fork like Purpur) running Minecraft 1.21.11
• Java 21 or newer
• Op status if you want to create worlds (joining is open by default)

Installation

Drop the LocalRealms.jar into your server's plugins/ folder and restart. That's it.

Commands

Create a world

/worldcreator admin create <name> <style> <dimension> <permlev> <gamemode> [seed]

Requires op.

Argument	Options	Notes
name	letters, digits, _, -	This becomes the world folder name
style	NORMAL, FLAT, VOID	Terrain type
dimension	NORMAL, NETHER, END	Which dimension to generate
permlev	1 or 4	1 = anyone can join, 4 = op only
gamemode	SURVIVAL, CREATIVE, ADVENTURE	Default gamemode for first-time visitors
seed	any number (optional)	Random if you leave it blank

Example — a public creative void world for skyblock:

/worldcreator admin create skyblock VOID NORMAL 1 CREATIVE

Example — an op-only flat testing world:

/worldcreator admin create testflat FLAT NORMAL 4 CREATIVE

Expect a brief lag spike while the world generates.

Join a world

/worldcreator join <name>

Teleports you to that world's spawn. Tab-complete will list every world you're allowed to visit.

Tips

• Your first visit to any world gives you a clean slate (empty inventory, full health, the world's default gamemode). Everything is saved from that point on — including your gamemode, so switching to Creative in a Survival world will stick the next time you return.
• You can edit plugins/LocalRealms/worlds.yml by hand to change a world's style, permlev, or default gamemode if needed — restart the server for changes to take effect.
• The server's original world is picked up automatically and treated as a Normal world, so per-world inventories work there too.