The Codex System
How the Codex works, what rewards it offers, and how to progress through it in Entropia Universe.
The Codex is Entropia Universe’s dynamic mission and reward system that replaces the old-style Iron Missions. Designed to track your hunting progress across planets and creatures, the Codex provides tailored rewards, skill options, and long-term goals for every player.
Whether you’re a beginner or an experienced hunter, understanding the Codex is essential to making the most of your gameplay and building your avatar’s skills.
How the Codex Works
When you hunt a creature type, the Codex automatically tracks your progress in the background. Each creature has its own Codex mission chain, consisting of multiple ranks (usually up to 25). Killing more of a specific mob unlocks new ranks, and each completed rank offers a skill reward.
You do not need to manually accept Codex missions – they’re activated automatically when you engage a new mob type.
Codex Progression: Ranks and Rewards
- Each mob type typically has Rank 1 to Rank 25
- Progression requires a certain number of kills per rank (increasing with each level)
- Upon completion of each rank, you choose one of several skill rewards
- Reward options include attributes like:
- Anatomy
- Laser Weaponry Technology
- Rifle
- Perception
- Courage
- And many more depending on the mob and planet
Some mobs may have different reward pools depending on your avatar’s level and location.
Why the Codex Matters
- It unifies mob progression across planets
- Offers consistent skill rewards without needing to track separate missions
- Helps build profession levels (e.g. hunting, scanning, looting)
- Encourages exploration and grinding for long-term character growth
Planet-Specific Codex Entries
While the Codex is universal, each planet has its own list of mobs.
Each mob’s Codex is planet-specific – and some planet still needs the development of a Codex system. Killing a mob on one planet does not count toward its Codex on another (e.g. Atrox on Calypso vs. a hypothetical Atrox on another planet).
Tips for Using the Codex
- Focus on one mob at a time to progress faster through ranks
- Check skill rewards before choosing – some are more valuable for your build
- Codex rewards can help balance your avatar (e.g. increase perception or evade)
Questions? Join the forum ->
Disclaimer: This Knowledge Base is developed through a collaboration between AI-generated source material and human-authored content. While all entries are fact-checked, readers are encouraged to contact EntropiaPlayer with any corrections, suggestions, or additional information.
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