Treasure 2 Mod — Guide
Rarity System
The mod operates on a strict seven-tier rarity system. This system governs the spawn rate of chests, the quality of loot, the strength of locks, and the effectiveness of charms and runes.
| Rarity | Applicable Items |
|---|---|
| Common | Chests, Keys, Locks, Loot, Adornments |
| Uncommon | Chests, Keys, Locks, Loot, Adornments |
| Scarce | Chests, Keys, Locks, Loot, Adornments |
| Rare | Chests, Keys, Locks, Loot, Adornments |
| Epic | Chests, Keys, Locks, Loot, Adornments, Charms, Runes |
| Legendary | Loot, Adornments, Charms, Runes |
| Mythical | Loot, Adornments, Charms, Runes |
Chests
Chests are the primary objective of the mod. They can be found on the surface, buried deep underground, or hidden within custom structures. Each chest can have multiple locks (up to 3) that must be removed sequentially.
Chest Varieties
- Common: Wooden Chest, Moldy Crate, Cardboard Box, Milk Crate.
- Uncommon: Crate, Ironbound Chest, Viking Chest.
- Scarce: Pirate Chest, Iron Strongbox, Wither Chest, Skull Chest.
- Rare: Gold Strongbox, Safe, Gold Skull Chest, Spider Chest.
- Epic: Dread Pirate Chest, Compressor Chest, Cauldron Chest, Crystal Skull.
Discovery Locations
- Graveyards: Often contain surface chests or markers for buried pits.
- Treasure Pits: Deep vertical shafts inspired by Oak Island, containing layers of logs and debris.
- Sunken Ships: Found in ocean biomes, containing nautical-themed loot.
- Ruins: Both surface and subterranean structures that utilize the mod's decay system.
Locks and Keys
To open a locked chest, players must use the correct key while sneaking (Sneak + Right Click). Keys have a durability (Max Uses) and a success probability. If a key fails its success roll, it may break.
Standard Keys
| Key Type | Rarity | Category | Unlocks |
|---|---|---|---|
| Wood Key | Common | Elemental | Wood Locks |
| Stone Key | Common | Elemental | Stone Locks |
| Leaf Key | Uncommon | Elemental | Leaf Locks |
| Iron Key | Uncommon | Metals | Iron Locks |
| Ember Key | Scarce | Elemental | Ember Locks |
| Gold Key | Scarce | Metals | Gold Locks |
| Diamond Key | Rare | Gems | Diamond Locks |
| Emerald Key | Rare | Gems | Emerald Locks |
| Ruby Key | Epic | Gems | Ruby Locks |
| Sapphire Key | Epic | Gems | Sapphire Locks |

Special Keys and Tools
- Pilferer's Lock Pick: A low-tier tool for Common (24%) and Uncommon (12%) locks. Craftable.
- Thief's Lock Pick: An improved tool for Common (32%), Uncommon (24%), and Scarce (16%) locks. Craftable.
- Lightning Key: Unlocks all Elemental locks with a 95% success rate.
- Metallurgist's Key: Unlocks all Metal locks (Iron/Gold) with a 95% success rate.
- Jewelled Key: Unlocks all Gem locks (Diamond/Emerald/Ruby/Sapphire) with a 95% success rate.
- Skeleton Key: A powerful key that unlocks Common through Rare locks (excluding Wither) with a 95% success rate.
Key Ring
The Key Ring is a vital utility item. It acts as a portable container for keys. When used on a chest, it automatically cycles through its stored keys to find the correct match, saving inventory space and time.

Mechanics: Decay and Mist
Decay System
Structures in Treasure 2 use a dynamic decay engine. When a structure generates, the game calculates a 'Block Strength' for every block based on its height and distance from supporting walls. If the strength falls below a threshold, the block is replaced with air or a 'decayed' version (e.g., Stone Bricks turning into Cracked Stone Bricks or Cobblestone).
Mist Dispersal
Mists (White, Poison, and Wither) are generated by source blocks. These can be permanently dispersed by placing torches in a perimeter around the source or by destroying the source block itself.