KJ's Skill Tree
A pufferfish skill tree created for KJ's Progression Pack. Implements tool progression and 3 different combat classes.
About this Mod
Adds two skill trees using Pufferfish Skill Trees, Pufferfish Attributes, Advanced Netherite, and KJ's Progression Limiter to heavily extend vanilla progression.
The combat tree provides ways of building into many different playstyles, however it makes the player very strong compared to vanilla mobs. It is heavily recommended to add a difficulty mod to scale the mobs to the player.
The gathering tree extends vanilla progression by requiring players to unlock tools as they go, as well as providing significant buffs to mining speed, fortune, and reducing anvil repair costs.
Available Versions
How to Install KJ's Skill Tree 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 (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "KJ's Skill Tree". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
KJ's Skill Tree 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 (1.21.1). You can switch loaders with one click in the panel.
Is KJ's Skill Tree compatible with fabric?
KJ's Skill Tree officially supports fabric for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with KJ's Skill Tree – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if KJ's Skill Tree 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 KJ's Skill Tree with just one click on your server.