A modern, lore-friendly bestiary for Minecraft that grows with your adventures. Learn about every creature, progress from E to S rank, and tailor how discovery works to suit your playstyle.

• Supports Forge 1.20.1
• Default E→S mode: points (deterministic, no RNG) with options for chance-based or sighting progression
• Server friendly, with datapack support to customize what the Bestiary shows for entity loot

Why use this mod?

• Immersion: Creature knowledge is earned through play. Details start hidden and are revealed as you interact with the world. You can even hide undiscovered entries entirely for a true “fog of war” feel.
• Progression that fits any playthrough: Choose between deterministic points, classic RNG chances, or a spyglass “sighting” approach. Bosses can be treated specially.
• Customizable: Dozens of config options and simple datapacks let you decide how strict, informative, or minimal the Bestiary should be. Works great in modpacks.

Highlights

• Bestiary Book with clean UI and 3D mob previews
• E→S rank progression per entity, with optional Rank-X challenges for late-game depth
• Multiple progression modes:
  • Points mode (default): earn points for kills, trading, feeding, taming, breeding, observing with a spyglass, and more
  • Chance mode: classic per-action chance to rank up
  • Sighting mode: discover entities by observing with a spyglass
• Progressive rank difficulty (optional): higher ranks take more effort
• Loot knowledge that updates over time:
  • Reads real loot tables when available
  • Can be extended or overridden with datapacks for full control
  • Dynamic drop tracking (optional) refines chances based on actual gameplay
• Global progression bar options (track S ranks or X ranks) for long-term goals
• Notifications on rank ups and a convenient keybind to open the Bestiary
• Performance options for low-end PCs and safe fallbacks for heavily modded packs

Customization at a glance

• Configurable systems (server and client):
  • Switch E→S style with esMode (points or chance) and the high-level progressionSystemType (ranks, kills, sighting)
  • Tune points and thresholds, enable progressive rank difficulty, and set discovery visibility (e.g., hideUndiscovered, forceObfuscation)
  • Control loot discovery behavior: enable dynamic drop tracking, tune sampling, and choose safer fallbacks
  • Low-end mode, UI scale limits, and other QoL for smooth play
• Datapack support for loot pages:
  • Place JSON files under data/<your_ns>/bestiary/<entity_ns>/<entity>.json
  • Supplement vanilla loot or fully override it per entity
  • See full format and examples in the guides below

Compatibility and performance

• Works on singleplayer and servers; drop the mod jar into the mods folder on both client and server
• Uses safe strategies to read loot in complex modded environments; optional fallbacks can be enabled in configs
• Low-end mode reduces GUI preview cost; adjustable entity preview scale helps on older GPUs
• Admin-friendly: change configs and use /reload after dropping datapacks to iterate quickly

Installation

1. Install Forge 1.20.1
2. Download the mod from Modrinth or CurseForge
3. Put the jar in your mods folder (client and server if applicable)
4. Launch the game

Quick start

1. Obtain or craft the Bestiary Book and press the keybind (default B) to open it
2. Interact with creatures to gain knowledge:
   • Fight, feed, trade, tame, breed, or observe with a spyglass (depending on mode)
3. As you rank up per entity, more details unlock: spawn info, stats, loot, and more
4. Want a different experience? Tweak configs or add a datapack to tailor the loot pages to your pack