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Slay the Spire 2 · Troubleshooting Guide · Crashes & Freezes

How to Fix Slay the Spire 2
Crashing

If Slay the Spire 2 keeps crashing or freezing, follow these steps in order. Crashes are almost always local — GPU drivers, corrupted files, or conflicting software — rather than server-side issues.

General Guidance Only

These steps are provided for informational purposes only and may not reflect the latest game updates. Port numbers, menu paths, and settings can vary by platform and version. GamerOutage.com is not responsible for any outcomes resulting from following this guide. When in doubt, refer to the publisher's official support site.

Step-by-Step Fix

1
Verify game files in Steam
Right-click Slay the Spire 2 in Steam → Properties → Local Files → Verify integrity of game files. This is the most effective first step — corrupted files from failed patches cause the majority of STS2 crashes.
2
Disable all mods
If you have any mods installed (via Thunderstore Mod Manager or manually in the BepInEx folder), disable them all and test vanilla STS2. Mods that haven't been updated for the latest Early Access patch are the leading cause of crashes.
3
Update GPU drivers
Update your NVIDIA or AMD GPU drivers to the latest version via GeForce Experience or AMD Adrenalin software. Even for a 2D-style game like STS2, outdated drivers can cause Unity engine crashes.
4
Delete corrupted save data
Navigate to %appdata%\Mega Crit Games\Slay the Spire 2\ and back up then delete any save files for runs you were in the middle of. A corrupted mid-run save can cause crashes every time the game tries to load it.
5
Disable Steam overlay
Go to Steam → Settings → In-Game → disable "Enable the Steam Overlay while in-game." The Steam overlay sometimes triggers crashes in Unity games during loading transitions.
6
Reinstall Slay the Spire 2
Uninstall STS2 via Steam (right-click → Manage → Uninstall). Navigate to the install folder and delete any remaining files. Reinstall from Steam. Your cloud saves will sync automatically when you relaunch.
Is it server-side?
Check real-time player reports — if reports are spiking, it's on Mega Crit's end, not yours.
Check StS2 Status →

Frequently Asked Questions

Why does Slay the Spire 2 keep crashing?

Crashes in STS2 are almost always caused by a mod conflict with the current patch version, corrupted game files, or a corrupted mid-run save file. Disable all mods, verify game files in Steam, and delete any saves you suspect are corrupted.

Slay the Spire 2 crashes when I start a new run — why?

Crashes at run start usually indicate a mod conflict or a corrupted game file in the run initialization code. Verify your game files in Steam and disable all mods. If you play with mods, check the mod's Discord or page for known compatibility issues with the current patch.

How do I find the crash log for Slay the Spire 2?

Crash logs are located at %appdata%\Mega Crit Games\Slay the Spire 2\. The "Player.log" and "Player-prev.log" files contain the most recent crash information. These logs are useful for reporting bugs to Mega Crit or troubleshooting mod conflicts.

More Slay the Spire 2 Fix Guides

StS2 Lag Fix →StS2 Login Fix →StS2 Can't Connect →
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