Content Packs

Overview

Third parties can add or override MMO Skill Tree content — quests, achievements, XP tuning, mastery tracks, currencies, classes, and more — without writing any Java, by shipping a standard Hytale asset pack: a .zip (or folder) of JSON dropped into the server's mods directory. MMO Skill Tree declares its own custom asset types, so the Hytale engine natively discovers, loads, and merges your pack at server start.

Who this is for

• Server owners who want to customize content beyond the admin dashboard, and keep those customizations in a portable pack they can move between servers.
• Content creators shipping quest packs, class packs, or total conversions on CurseForge.
• Translators contributing new languages (see Translation Packs).

What packs can add

Each links to its entry in the Content Type Reference:

• Quests and Achievements
• Mastery tracks and Currencies
• Classes and UI Themes
• XP maps, Mob-kill XP, Luck loot, Item & Action requirements, Boost templates, Command rewards
• Translations (native Hytale .lang files — not an MMO-custom type)

What packs cannot add

• Custom skills and active abilities — these load too early and are code-backed (planned for a future release).
• XP tokens — can be tweaked through config, but not created from pack data.

Need a new skill? That stays a config/code feature for now — see Custom Skills.

Reference packs

Six real, production packs you can learn from — each demonstrates a different slice of the system:

The Mastery, Classes, Translations, Taming, and Capes packs ship as companion downloads alongside the mod on CurseForge.

Quick start

A content pack is just a manifest plus JSON under Server/MMOSkillTree/:

MyMmoPack.zip
├── manifest.json
└── Server/
    └── MMOSkillTree/
        ├── Control/MyMmoPack.json        (optional — per-type add/replace mode)
        ├── Quests/dragon_hunt.json
        └── Achievements/first_blood.json

The manifest

Only Name is required and IncludesAssetPack must be true. No Main class is needed — this is a data-only pack.

{
  "Group": "YourStudio",
  "Name": "MyMmoPack",
  "Version": "1.0.0",
  "ServerVersion": "*",
  "IncludesAssetPack": true
}

Add your first quest

Per-entry types (quests, achievements, masteries, currencies, classes) use one file per entry. The asset key comes from the filename; Payload is the entry as a nested JSON object (no escaping):

// Server/MMOSkillTree/Quests/dragon_hunt.json
{
  "Name": "dragon_hunt",
  "Payload": {
    "id": "dragon_hunt",
    "displayName": "Dragon Hunt",
    "category": "main",
    "objectives": [
      { "id": "slay", "type": "KILL_ENTITY", "target": "*", "amount": 5 }
    ],
    "rewards": [
      { "type": "XP", "skill": "SWORDS", "amount": 500 }
    ]
  }
}

Install and verify

1. Drop the zip (or folder) into your server's mods directory — the same place MMO Skill Tree itself lives.
2. Start the server.
3. Look for these log lines confirming the pack loaded:

[AssetPacks] Registered MMO content asset stores
[AssetPacks] Quest pack layer applied (1 entries, mode=add) — N quests effective

Where to go next

• Content Types & Merging — every pack-extensible type, how merging works, the Control file, and feature gating.
• Template Extension — the extends / params / overrides DSL that collapses repetitive content.
• Publishing & Translations — zip-building, translation packs, cosmetic packs, and security.