

Handoff Relay
Handoff Relay is a Minecraft Fabric mod designed for timed, serialised gameplay handoff challenges.
The mod allows a Minecraft world to be passed between players while preserving player progression, timer state, inventory state, and world continuity between sessions.
Handoff Relay supports both:
- singleplayer/world-transfer workflows
- dedicated Fabric server hosted workflows
Core systems include:
- timed gameplay sessions
- reconnect timer continuation
- timer expiry enforcement
- expired player reconnect blocking
- player inventory persistence
- armour/offhand persistence
- ender chest persistence
- XP/health/hunger persistence
- potion/status effect persistence
- location and respawn persistence
- single active-player enforcement
- spectator account allowance
- configurable participant count tracking
- player order tracking (Player 1 of X, Player 2 of X, etc.)
- anti-creative / anti-flight enforcement
- dangerous command abuse blocking
- LAN cheat escalation mitigation
- persistent handoff save tracking
- backup save recovery
- integrity lock protection
The project is intended for:
- serialised gameplay recordings
- challenge runs
- collaborative survival handoff projects
- structured world-transfer events
- hosted sequential multiplayer experiences
Current project state: Stable public release (v1.0.0).
Notes: Handoff Relay is designed to preserve fair serialised gameplay progression between participants. Administrative filesystem tampering or deliberate world file modification is outside standard gameplay expectations and may affect continuity.
Issue Tracker
Found a bug or have a feature request?
Please report issues through the GitHub issue tracker:
https://github.com/Kingra007/handoff-relay/issues
When reporting a bug, please include:
- Handoff Relay version
- Minecraft version
- Fabric Loader version
- Singleplayer or dedicated server
- Steps to reproduce
- Expected behaviour
- Actual behaviour
- Latest log file (if available)
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as handoff-relay-1.0.2.jar — drop this file into the mods folder
- Download size: 29 KB
- Download link checked 22 Aug 2026 — working
These come from our own check of the pack file, not from the source page.