Agent Spire - AI NPC Social Multiplayer Overhaul

⭐ — (10 endorsements) 📥 1,240 downloads 📌 v0.8.29 📅 4/4/2026
🟡 Updated this year

By shichenbaiyu · Gameplay

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 4/17/2026 📅 Created: 4/4/2026

🔍 Analysis

  • 👍 0.8% endorsement rate
  • 🏆 #263 of 748 Gameplay mods in this game by downloads

📋 About This Mod

Stop just playing cards—start talking. Agent Spire turns every monster and NPC into a sentient AI agent. Negotiate with Bosses, recruit monsters as pets, or fast-talk the Merchant into a scam. Fully supports Co-op with "backstabbing"

I’m updating the English language configuration today and aim to upload the English setup tutorial within the next few days. My Chinese tutorials are currently available on Bilibili, and the English versions are in production!

  • []Setup Tutorial (Bilibili): https://www.bilibili.com/video/BV1Ge9gBEEwN[/]

    More Gameplay Showcases:

    • []Torch Head vs. The Heart: https://www.bilibili.com/video/BV1aaXVBWEv1[/]

      []Slay the Spire 2 AI "Affection" System: (Wait, why is there hypnosis? This isn't how Gala Spire works!)https://www.bilibili.com/video/BV13aXVBWECi[/]

      []Giving the Merchant AI: (He actually forced 6 pairs of Defends on me?!)https://www.bilibili.com/video/BV1CSXsB6EaL[/]

      []The "Begging" Mechanic: (Finally fixed the bug where you couldn't beg for gold in the Spire.)https://www.bilibili.com/video/BV1ouXEBCExo[/]

      []Mercy & Pleading: (Begging the Boss to stop! Changing monster intents through dialogue.)https://www.bilibili.com/video/BV1quXEBCEFU/[/]

      🗣️ The "Speech-to-Win" Interaction

      The Spire is no longer a silent climb. Every encounter is an opportunity for negotiation or deception.

      The "Mercy" System: About to take a lethal hit? Beg, bribe, or persuade the Boss to change their intent. Depending on your rapport, they might just spare you... for a price.

      Recruit & Command: Use your silver tongue to convince elites to betray their side. Recruited monsters fight alongside you, protect you with their own HP, and can be commanded through dialogue.

      Psychological Warfare: Gaslight enemies into a state of confusion, forcing them to skip turns or inflicting massive debuffs through dialogue alone.

      🤝 "Toxic" Multiplayer Chaos

      The ultimate friendship-ruiner. Use the AI to assist your team—or systematically destroy them.

      Backstabbing 101: Persuade the Merchant to liquidate your teammate’s key cards for gold, or convince him to raise prices exclusively for your "friends."

      Target Redirection: Tell a monster that your teammate looks like a much bigger threat. If the AI believes you, it will redirect its multi-hit attacks toward them!

      Ghost Interaction: Dead players remain as "Ghost Agents," haunting the battlefield to taunt enemies or whisper cryptic (and potentially fake) advice to survivors.

      🏪 The Sentient Merchant

      He’s not a vending machine; he’s a businessman with a short fuse.

      Dynamic Haggling: Negotiate for lower prices or ask him to upgrade a card before you buy it.

      The Blacklist: Repeatedly trying to buy items you can't afford will annoy him. Keep it up, and he’ll kick you out, blacklisting you for the remainder of the run.

      ⚡ Next-Gen AI Performance

      Powered by Gemini 3 Flash: Experience "Instan

📊 Mod Details

Game
Slaythespire2 Mods
Author
shichenbaiyu
Version
0.8.29
Downloads
1,240
Endorsements
10
Category
Gameplay
Created
4/4/2026
Updated
4/17/2026

🔧 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 shichenbaiyu 🔎 Similar Mods 🌐 Best Gameplay (All Games) 🔀 Check Compatibility ⚖️ Compare Mods 🆕 New Mods