CurseForge · Minecraft mod

NeoSync

Inspired by the original Sync mod, NeoSync lets you clone yourself into shells each with its own inventory, XP, and gamemode and swap minds between them across time and space.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which NeoSync release should I use?

Updated yesterday

Latest stable file NeoSync 1.21.1-1.3.0

Game version 1.21.1

Loader NeoForge

NeoSync 1.21.1-1.3.0 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is NeoSync required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release NeoForge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does NeoSync 1.21.1-1.3.0 need?

NeoSync 1.21.1-1.3.0. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

Just Enough Items (JEI) Optional for NeoSync 1.21.1-1.3.0

optional

Matching file found Matched file: 19.43.0.395 for NeoForge 1.21.1

Jade 🔍 Optional for NeoSync 1.21.1-1.3.0

optional

Matching file found Matched file: [NeoForge 1.21.1] 15.10.6

Curios API Optional for NeoSync 1.21.1-1.3.0

optional

Matching file found Matched file: curios-neoforge-9.5.1+1.21.1.jar

Curios API Optional for NeoSync 1.21.1-1.3.0

optional

Matching file found Matched file: 9.5.1+1.21.1

Just Enough Items (JEI) Optional for NeoSync 1.21.1-1.3.0

optional

Matching file found Matched file: 19.43.0.395

We only count dependency files that match this setup. A file for another loader does not fill the gap.

Before you install it

Add NeoSync without breaking your instance.

Built for NeoSync 1.21.1-1.3.0. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use NeoSync 1.21.1-1.3.0. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

This file does not list any required mods. Do not add a library just because a different file uses it.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside NeoSync 1.21.1-1.3.0. It opens that exact file at the source.

About this project

What does NeoSync add?

NeoSync

One mind. Many bodies.

NeoSync brings the legendary Sync experience to NeoForge 1.21.1.

Grow extra bodies, or shells, each with its own inventory, experience level, and gamemode. Swap your consciousness between them at will. Die in a shell? You wake up in another. Leave one parked in the Nether while you mine the Overworld. Keep a spare set of enchanted gear loaded in a shell halfway across the server. The possibilities are yours.

How it works

Craft a Shell Constructor and place it down.
Provide a genetic sample — right-click with an empty hand. > ⚠️ With default config this costs 20 HP (40 in hardcore). Hold a totem, eat a golden apple, or flip warnPlayerInsteadOfKilling in the config if you'd rather not die for science.
Power the Constructor. Place a Treadmill next to it, lure a pig or wolf onto the front block, and piggawatts flow. Or hook it up to any Forge Energy source from your favourite tech mod.
Craft a Shell Storage, place it, and feed it redstone or FE.
Walk into an open Shell Storage and a radial shell menu appears — pick your destination body and sync.

Features

Cross-dimensional syncing. Park shells in the Overworld, Nether, End, or any modded dimension and sync between them instantly.
Per-shell inventory, XP, and gamemode. Each shell is a fully independent body with its own loadout and progression.
Death handoff. If a shell dies, you auto-sync back to your original body or to a random remaining shell if the original is gone. Shell deaths don't count toward your death counter.
Automation support. Pipe armor and tools into a Shell Storage to equip the parked shell, or pull gear back out.
Dye your storages. Right-click a Shell Storage with dye to color-code it makes spotting "the mining shell" across a dozen containers easier.
Configurable sync priority. On death, auto-sync to the NATURAL, NEAREST, or dye-color-matched shell of your choice.
Flexible power. Shell Storages accept raw redstone signal and/or FE. Treadmills output FE to any energy-accepting block.
Comparator output. Containers emit signal based on either build progress or inventory fullness — right-click with a wrench (stick by default) to toggle. ~~~~

Blocks & Items

Block / Item	Purpose
Shell Constructor	Consumes FE to grow a new shell from your genetic sample.
Shell Storage	Houses a shell; walking in opens the radial selector. Needs power to keep the shell alive.
Treadmill	Two-block structure. Lure an animal on; it walks; FE flows.
Sync Core	Key crafting ingredient — combine with gray concrete to make either shell container.

Mod Integration

JEI — in-depth info panels on every sync block explaining the workflow, plus a Treadmill Energy Sources category listing every supported entity and its FE/tick output.

Jade — crosshair tooltips for Shell Constructors, Storages, and Treadmills showing owner, build progress, color, powered state, and energy.

Both are optional. NeoSync runs fine without them.

Configuration

Everything is tunable in config/neosync-common.toml. A taste of the knobs:

Key	Default	Effect
`enableInstantShellConstruction`	`false`	Instant shell builds in creative.
`warnPlayerInsteadOfKilling`	`false`	Don't kill low-HP players on fingerstick.
`fingerstickDamage` / `hardcoreFingerstickDamage`	`20` / `40`	HP consumed per shell sample.
`shellConstructorCapacity`	`256000`	FE needed to finish a shell.
`shellStorageCapacity` / `shellStorageConsumption`	`320` / `16`	FE buffer + per-tick drain to keep a shell alive.
`shellStorageAcceptsRedstone`	`true`	Accept raw redstone signal as power.
`shellStorageMaxUnpoweredLifespan`	`20`	Ticks a storage holds a shell without power.
`energyMap`	chicken=2, pig=16, player=20, wolf=22, villager=25, creeper=80, enderman=160	FE/tick each entity generates on a treadmill.
`syncPriority`	`NATURAL`	On-death auto-sync target: `NATURAL`, `NEAREST`, or any dye color.
`wrench`	`minecraft:stick`	Item that toggles a container's comparator output.