GhostReplay
GhostReplay is a client-side macro recorder for Minecraft. It records your exact keyboard and mouse inputs and replays them later with high precision.
Screenshots
About this Mod
GhostReplay
GhostReplay lets you record your exact in-game inputs and replay them as a macro later.
What It Does
Records keyboard + mouse input
Replays movement with tick-accurate precision
Designed for movement testing, speedruns, and experiments
Fully client-side (no server install needed)
Use Cases
Practice parkour and speedrun routes
Debug movement mechanics
TAS-style experimentation (without going full NASA)
Features
Fabric client mod
Works on Minecraft 1.21.4-11
Lightweight & performance-friendly
Modular system (easy to expand later)
Important Notes
Client-side only
Not a cinematic camera replay
Still under active development, expect updates
Notes for Coders and Nerds
- Build time: ~20 Hours
- Tested for player movement, camera movement, sprinting, sneaking (although glitched, hopefully an easy patch), and block placement/destruction.
- Does not replay anything done within a GUI, eg, Crafting Tables, Inventory, and Furnaces.
Available Versions
How to Install GhostReplay on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "GhostReplay". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11, 1.21.10, 1.21.9 (+5 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
GhostReplay server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is GhostReplay compatible with fabric?
GhostReplay officially supports fabric for Minecraft 1.21.11, 1.21.10, 1.21.9. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with GhostReplay – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if GhostReplay consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install GhostReplay with just one click on your server.