
Oozy Codex
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
A progression-rich Tensura expansion with 248 skills, a Living Registry, Bestiary, Ultimate Echoes, Ascension, and Legacy abilities.
⬇ Download on Modrinth


Oozy Codex — Codex Revelation
Oozy Codex is a progression-rich expansion for Tensura: Reincarnated on Minecraft 1.21.1. It transforms skill growth, analysis, research, awakening, attunement, and ascension into connected survival systems instead of command-only rewards.
What’s inside
- 248 native skills with structured Pursuits and command-free acquisition paths
- All 13 Slimey Legacy Ultimate Skills, integrated with save-compatible identities
- Insightful Elder, a tier between Sage and Great Sage with analysis and limited legal lower-tier skill copying
- A dedicated seven-tab Living Skill Registry for Skills, Pursuits, Bestiary research, Lore, Scripts, Mastery, and the World Language Tome
- Five native Ascension abilities with their own skill icons
- Fast Start for every race-selection path, with Insightful Elder and starter resistances—but never Predator
- Character Reset commands and items that correctly clear Fast Start and completed Pursuit state
Codex Revelation
- Research vanilla and Tensura creatures through a five-level Bestiary
- Discover eight Memory Echo types at real tagged structures
- Transcribe mastered lower-tier skills into authenticated Codex Fragments
- Share limited signed research through Companion Tomes
- Evolve mastered Common, Intrinsic, and Extra skills through Ultimate Echo ordeals
- Unlock permanent specializations for Oozy Codex and Legacy Ultimate Skills
- Soulbind equipment at the Spiritual Anvil, then advance it through the Spiritual Forge
- Influence six temporary virtual environments through repeated elemental skill use
- Receive concise, screen-safe Codex alerts without constant chat spam
Additional systems
- Reactive Potion of Adaptation progression with 22 resistance tracks
- Choice-based Archive rewards, mentor trades, creature analysis, trials, battles, and evolution paths
- World Language personalities, Spiritual Attunement, Ascension, mastery, lore, and research records
- At least one stealable or copyable skill path for every supported vanilla and Tensura mob
- Native skill registration so addon skill IDs remain editable through Tensura commands
- Original 32×32 addon skill textures, custom item art, native block textures, and dedicated graphical screens
Requirements
- Minecraft 1.21.1
- NeoForge 21.1.241 or newer in the 1.21.1 line
- Tensura: Reincarnated 2.0.1.1–2.0.x and its required dependencies
- Java 21
- Install on both client and server
Remove the old standalone Slimey Legacy mod, and never install two Oozy Codex versions at the same time.
Licensed under the MIT License.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as Oozy Codex NeoForge 1.21.1 V2.0.0.jar — drop this file into the mods folder
- Download size: 1.2 MB
- Download link checked 26 Oct 2026 — working
These come from our own check of the pack file, not from the source page.