Run Companion
Real-time card pick recommendations based on your deck
How does the Run Companion work?
The Run Companion helps you decide which card to pick during your Slay the Spire 2 run. It scores each candidate card based on community win rate data, how well it fits your current deck's archetype, and synergy with your existing cards.
Two ways to use it:
Manual mode
Select your character, add your cards manually or import your current_run.save file, then enter the card reward options to get recommendations.
Auto-sync with rusty-sts (recommended)
Install rusty-sts, our desktop companion app. It watches your save file and automatically syncs your current run to this page every few seconds. Your deck, floor, and ascension update in real-time as you play — just keep this page open and enter card rewards when you need help deciding.
Score breakdown:
- Baseline — overall win rate, pick rate, and floor timing for this card
- Archetype — how well this card fits a winning deck archetype
- Synergy — win rate when paired with cards already in your deck
- Copies — whether adding another copy helps or hurts win rate
- Upgrade — bonus for picking the upgraded version
Character
Where is my save file?
Your current run save file is located at:
C:\Users\<YourUsername>\AppData\Roaming\SlayTheSpire2\steam\<SteamID>\profile1\saves\current_run.save On macOS/Linux, look for SlayTheSpire2/.../saves/current_run.save in your app data directory.
Choose your character above, or import a .save file to load your current run.
