Crystal Library

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"Library" redirects here. For more uses, see Library (disambiguation).
Crystal Library
Region: Rodentia
Rank requirement: Lord/Lady
Map piece: Crystal Library Card
Required Power Types: Physical
Required Cheese: Standard Cheese
Number of Mice: 13
Shops: Cheese Shoppe
Charm Shoppe
General Store
Release Date: 9 August 2011
A magical barrier originally protected this library from mouse invasion until recently. Bands of magic and mechanical mice have circumvented the library's security measures in an effort to destroy the research Zugzwang once worked so hard to document.


Crystal Library is a hunting location in Rodentia region.
It requires the rank of Lord/Lady and the Crystal Library Card to access.

This location introduces Library Assigment mechanic to the game.

Library Assignment

In this location, an Assigment mechanic is made known.

  • The Hunter can choose to pursue a certain research. Each research type may has its own requirements.
    • Each research can have one of the possible assignments.
    • Each assignment requires the Hunter to complete a set of tasks. A task is usually either one of two types:
      • Catching a type of mouse with certain condition (cheese, charm, or power type)
      • Loot a certain item in a certain location
  • Once all the tasks are done, the assignment ends and the rewards are given automatically. Most of the assignments reward a certain Tome of Wisdom and some Library Points, which is required to start high-tier researches.
  • The Hunter can only pursue 1 assignment at a time.
    • The Hunter can use the Hunter's Hammer to end the assignment prematurely. After that, they need to wait for 1 hour to start another assignment.

Heads-Up Display

The HUD shows Library Assignment status, including:

Assignment Interface

On this interface, more assignment information is shown:

  • The Hunter's current Library Points
  • The Hunter's Inventory of Fusion Fondue
  • The list of all researches, including the names, descriptions, and requirements.


All mice in Crystal Library are part of the Zurreal's Breed group, except the Crown Collector, which is part of the Indigenous Mice group.

SUPER|brie+ is required to attract Tome Sprite.
Scholar Charm is required to attract Zurreal the Eternal.

Most mice here are weak to Physical and Tactical power types, with varied effectiveness.
Zurreal the Eternal requires Zurreal's Folly to catch.

Mouse Points Gold Loot
Aether 56,000 18,000 Ancient Relic
Bookborn 11,900 950
Crown Collector 1,000 1,000
Effervescent 16,000 2,400
Explorator 5,500 500
Flutterby 12,000 1,000
Infiltrator 15,800 1,900
Pocketwatch 6,400 900
Scribe 14,000 9,000
Steam Grip 8,000 7,000
Tome Sprite
Requires SUPER|brie+
14,000 1,800 Magic Essence
Walker 17,000 3,000
Zurreal the Eternal
Requires Scholar Charm
79,000 36,000 Ancient Relic
Reaper's Perch Blueprints

Hunting Strategy

Hunting Tips by Larry

The Crystal Library is an ancient trove of knowledge passed down through generations of only the most honored and powerful wizards; it was last under the care of Zugzwang before he vanished.

In the absence of Zugzwang a powerful mouse known as Zurreal the Eternal has managed to infiltrate the library's defences where he has unleashed an army of mechanical and magical mice to destroy the knowledge the library holds.

Your task is to defend the library and conduct research to rebuild the knowledge that has been lost. To start your research, pick an envelope to receive an assignment. Each individual envelope may contain one of many similarly-themed assignments.

Completing assignments will earn you rewards related to where your assignment took you as well as Library Points to show you're ready to start more varied and challenging assignments!

Your research will no doubt take you far and wide and test your knowledge of hunting! With enough knowledge you may even be able to discover how to find the elusive Zurreal...

Adventure Book

The Hunter can complete most steps of Capture Zurreal the Eternal adventure in Crystal Library.

Location-Specific Effects




These are the shops found in Crystal Library.

Cheese Shoppe

Item Cost Requirement Refund
Swiss Cheese 100 gold None 100 gold
Brie Cheese 200 gold None 200 gold
Gouda Cheese 600 gold None 600 gold


Item Cost Requirement Refund
Bamboozler Base 75,000 gold None 13,500 gold
Aqua Base 115,000 gold None 20,700 gold
Spellbook Base 1,296,000 gold
1 Master Bindings
3 Torn Technic Page
3 Torn Mystic Page
None N/A
Item Power Type Cost Requirement Refund
Zugzwang's Last Move Tactical 310,000 gold None 55,800 gold
Zugzwang's First Move Tactical 615,000 gold
1 Zugzwang's Last Move
1 Magic Feather
None N/A
Reaper's Perch Shadow 2,767,750 gold
1 Reaper's Perch Blueprints
6 Onyx Stone
6 Rune
None N/A
Zurreal's Folly Tactical 1 Desert Travel Almanac
1 Encyclopedia Gnawnia
6 Luscious Lumber
1 Mesh Netting
3 Ectoplasmic Essence
3 Warp Nail
3 Runestone
1 Draconic Book
1 Lich Jewel
None N/A

Charm Shoppe

Item Cost Requirement Refund
Charmbit 25 gold None 20 gold
Uncharged Scholar Charm 6,300 gold None 5,950 gold
Power Charm 150 gold None 45 gold
Luck Charm 300 gold None 90 gold
Lucky Power Charm 900 gold None 270 gold
Super Power Charm 500 gold None 150 gold
Super Luck Charm 750 gold None 225 gold
Super Lucky Power Charm 2,500 gold None 750 gold

General Store

Item Cost Requirement Refund
Curds and Whey 12 gold None 3 gold
Ionized Salt 450 gold None 150 gold

History and Trivia


Gnawnia:  • Meadow   • Town of Gnawnia   • Windmill   • Harbour
 • Mountain
Valour:  • King's Arms   • Tournament Hall   • King's Gauntlet
Whisker Woods:  • Calm Clearing   • Great Gnarled Tree   • Lagoon
Burroughs:  • Laboratory   • Mousoleum   • Town of Digby   • Bazaar   • Toxic Spill
Furoma:  • Training Grounds   • Dojo   • Meditation Room   • Pinnacle Chamber
Bristle Woods:  • Catacombs   • Forbidden Grove   • Acolyte Realm
Tribal Isles:  • Cape Clawed   • Elub Shore   • Nerg Plains   • Derr Dunes
 • Jungle of Dread   • Dracano   • Balack's Cove
Varmint Valley:  • Claw Shot City   • Gnawnian Express Station   • Fort Rox
Queso Canyon:  • Queso River   • Prickly Plains   • Cantera Quarry   • Queso Geyser
Rodentia:  • S.S. Huntington IV   • Seasonal Garden   • Zugzwang's Tower   • Crystal Library
 • Slushy Shoreline   • Iceberg   • Sunken City
Sandtail Desert:  • Fiery Warpath   • Muridae Market   • Living Garden   • Twisted Garden
 • Lost City   • Cursed City   • Sand Dunes   • Sand Crypts
Hollow Heights:  • Fungal Cavern   • Labyrinth   • Zokor   • Moussu Picchu   • Floating Islands
Folklore Forest:  • Foreword Farm   • Prologue Pond   • Table of Contents   • Bountiful Beanstalk
 • School of Sorcery
Rift Plane:  • Gnawnia Rift   • Burroughs Rift   • Whisker Woods Rift   • Furoma Rift
 • Bristle Woods Rift • Valour Rift
Events:  • Great Winter Hunt: Great Winter Taiga
 • Cinnamon Hill   • Golem Workshop   • Ice Fortress
 • Halloween: Gloomy Greenwood
 • MouseHunt Birthday: The SUPER|brie+ Factory
 • Ronza: Ronza's Traveling Shoppe
 • Historic uses: King's Party Zone   • Festive Comet
Others:  • King's Stockade   • Vacant Lot