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The Flame Swordsman
Gameplay

The Flame Swordsman

by DeadSpiderv3

Adds The Flame Swordsman, a playable fire-themed character for Slay the Spire 2 with custom cards, relics, mechanics, and art. This is my first mod and a fun project, so expect some rough edges.

Created

Jul 12, 2026

Updated

Aug 24, 2026

View on Nexus Mods

Description

Rengoku - The Flame Swordsman
This is a major revamp of my original Rengoku mod. I went back through almost the entire character and reworked, rebalanced, fixed, and polished a huge amount of the mod.
Major changes include:
  • Large-scale card pool rebalance
  • Adjusted energy costs and rarities
  • Improved Flame and Burn interactions
  • Reworked weaker and awkward cards
  • Improved AoE and repeated-attack behavior
  • Fixed card-play stuttering and performance issues
  • Fixed numerous combat bugs
  • Updated relics and character mechanics
  • Improved overall gameplay flow
  • General cleanup and polish throughout the mod
  • No more reused card artwork
If you played the original version of the mod, this is a much more complete and polished version of Rengoku.

Public & Beta Downloads


There are now two separate versions of the mod available in the Files section.
PUBLIC BUILD
For the normal Slay the Spire 2 branch:
v0.107.x
Download the file labeled:
Rengoku v1.0.0 - Public
BETA BUILD
For the Slay the Spire 2 public-beta branch:
v0.111.x
Download the file labeled:
Rengoku v1.0.0 - Beta
The Public and Beta builds contain the same Rengoku content, but they are built separately to work with the different versions of Slay the Spire 2.
Do not install the Public and Beta versions at the same time.

REQUIREMENTS


Requires BaseLib 3.4.5 or newer.

INSTALLATION


  1. Install BaseLib 3.4.5 or newer.
  2. Download the correct Rengoku file for your game branch.
  3. Extract the RengokuModfolder into:
C:\Program Files (x86)\Steam\steamapps\common\Slay the Spire 2\mods\Your final folder should contain:
mods\RengokuMod\RengokuMod.dll

mods\RengokuMod\RengokuMod.json

mods\RengokuMod\RengokuMod.pck

YouTube


I post gameplay, mod showcases, updates, and other projects here:
www.youtube.com/@DeadSpiderYT