TheBiomex Mod

⭐ — (0 endorsements) 📥 7 downloads 📌 v1.1.0 📅 7/31/2026
🟡 Updated this year

By shadoethedoe · Gameplay

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 7/31/2026 📅 Created: 7/31/2026

🔍 Analysis

  • 🏆 #733 of 749 Gameplay mods in this game by downloads

📋 About This Mod

CHECK OUT THE RIFTER MOD!!!:  TheRifter Mod at Slay The Spire II Nexus - mods and community

This mod contains 20 Commons, 25 Uncommons, and 20 Rares to match the usual characters. It also has 2 basics and 1 token. New cards are unlikely, to not mess up the role or scaling. Has cards including the Silent.

Description

A fully developed retro character for Slay the Spire 2. Likely about as strong as the Ironclad. Created by @Shadow-jj6fm. — Made with the STS2 Character Creator

Expect a lot of toxin.

Shows in rest sites, ancient dialogue, and character select.

New updates or fixes will not ruin your compendium or save! <3

1 orb slot.

Installation instructions

1. Unzip this file. You will see two folders:

TheBiomexMod/  (this mod)

BaseLib/      (the modding library this mod is built on)

2. Copy BOTH folders into your Slay the Spire 2 mods folder:

Steam\steamapps\common\Slay the Spire 2\mods\

(create the mods folder if it isn't there yet). You should end

TheBiomexMod/

3. Launch Slay the Spire 2. The first time you run mods, the game

shows a mod-loading warning — accept it, then enable both

BaseLib and TheBiomexMod in the in-game Mods menu and restart.

4. Your character appears on the character select screen.

Both folders are required. If BaseLib is already installed from

another mod, you can skip copying it — but keeping this copy is

safe (same version, it just overwrites).

Main features

I expect it to be moderately unbalanced but that's okay, this mod compiles several aspects of characters, creating a powerful acidic defending titan. They specialize in power stacking, defense, and poison.

[]New Playable Character: The Biomex, a retro pixel wanderer lost in a painted world.[/]

[]60+ Custom Cards:

  • []Max HP‑sacrifice skills[/]

    []Block‑interaction attacks[/]

    []Power‑based scaling[/]

    []Unique recursion mechanics[/]

[/]

[]Custom Relics: Including the Biomex Immunity, designed to heal poison.[/]

[]Unique Mechanics:

  • []Cards that return when Block breaks[/]

    []Strength from defensive play[/]

    []Powers that snowball into late‑fight nukes[/]

[/]

[]Custom Art:

  • []Pixel sprites[/]

    []Dozens of unique card portraits[/]

[/]

[]English Localization

Recommended Playstyle

[]Spam poison[/]

📊 Mod Details

Game
Slaythespire2 Mods
Author
shadoethedoe
Version
1.1.0
Downloads
7
Endorsements
0
Category
Gameplay
Created
7/31/2026
Updated
7/31/2026

🔧 How to Install Slay The Spire II Mods

Download from Nexus Mods.

📖 Full step-by-step install guide for Slay The Spire II →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Slay The Spire II commands, item IDs, and more.

Keep browsing — more Slay The Spire II mods await

📋 All Slay The Spire II Mods 🏆 Top 25 📂 More Gameplay 👤 More by shadoethedoe 🔎 Similar Mods 🌐 Best Gameplay (All Games) 🔀 Check Compatibility ⚖️ Compare Mods 🆕 New Mods