Patch NotesPC
Slay the Spire 2 v0.99.1 fixes crashes, desyncs, adds art and a mod-manifest overhaul
The March 17, 2026 update merged two beta-branch patches into the main branch and addresses crashes, softlocks, multiplayer state divergence, localization, art, and mod structure.
The Slay the Spire 2 team pushed version 0.99.1 to the main branch on March 17, 2026, consolidating the changes from the previous two beta-branch patches. If you want to test beta builds yourself, follow the developer’s beta branch instructions on Steam.
Patch Notes for Slay the Spire 2 v0.99.1
This update applies a hard HP cap, adds several new pieces of art and an icon for the Murderous run modifier, resolves numerous crashes and save/desync problems (including multiple multiplayer softlocks and state divergence cases), improves localization and font rendering, and changes how mods are packaged and declared.
Patch Notes – v0.99.1
BALANCE:
- Players, enemies, and pets can no longer have their HP increased above 999,999,999
ART:
- Add icon for Murderous run modifier
- Added portrait art for the following cards:
- Feeding Frenzy
- Sloth
- Waste Away
BUG FIXES:
General:
- Pressing B on controller while focused on a dropdown menu no longer also closes the settings screen
- Fixed crash when interacting with potions during combat transitions
- Fixed crash when syncing cloud saves on Windows
- Fixed rare save data loss on Windows when power is lost during a save
- Fixed crash when quickly navigating away from menus
- Fixed dev console failing to match commands on non-English system locales
- Fixed potential softlock when auto-played cards trigger grid or card selection
- Fixed state divergence related to discarding potions too soon after combat ends
- Fixed being able to “peek” in card screens outside of combat
- Fixed closing the settings menu while a dropdown is open not also closing the dropdown
- Fixed navigating down the dropdown items causing the settings to scroll down
- Fixed softlock when auto-played cards triggered card selection
Ironclad:
- Fixed Hellraiser power playing Strikes if there are no valid targets
Potions & Relics:
- Fixed Fairy in a Bottle and Lizard Tail relics not healing you when your Max HP is 1
- Fixed Massive Scroll relic description saying that it can only give you Colorless multiplayer cards
- Fixed softlock if you proc Lasting Candy relic from the fixed tutorial card rewards
- Fixed Hand Drill relic applying Vulnerable to the player if Burn card breaks their block
Enemies:
- Fixed missing Kaiser Crab boss death VFX
- Fixed Kaiser Crab face animation not looping after a claw takes damage
- Fixed the word “Stunned” not appearing when Rock Bowlbug does its stunned move
Ancients:
- Fixed Tezcatara’s Brightest Flame card being able to decrease your Max HP to less than 1
Events:
- Fixed softlock when dying in the Jungle Maze Adventure event
- Fixed softlock if you die in the Room Full of Cheese event
Multiplayer:
- Fixed softlock when any player has Potion Belt and Alchemical Coffer relics
- Fixed being unable to navigate via controller if you unready yourself in lobby
- Fixed players being unable to end their turn when they die while the Whispering Earring relic autoplays their cards
- Fixed Doormaker‘s Door HP not scaling correctly after the Doormaker escapes
- Fixed softlock when queueing a potion to be thrown after the enemy would die
- Fixed crash when returning to the map after loading a multiplayer save
- Fixed host and client sometimes generating different maps from the same seed
- Fixed map changing after reconnect with the Big Game Hunter modifier or Treasure Map and Golden Compass relics
- Fixed softlock caused by a player dying with cards in their hand
- Fixed state divergence related to playing Huddle Up during another player’s card selection
- Fixed timing-related state divergence occurring at the end of a combat
- Fixed rare instances of getting stuck at an empty chest
- Fixed a softlock that could occur when a player dies to Breakthrough card’s self-HP loss in multiplayer
- Fixed softlock at the end of the Architect event in multiplayer
Localization:
- Fixed crash when selecting Ironclad on Turkish locale systems
- Fixed Russian card descriptions showing raw template text for Call of the Void, Coolheaded, Fuel, and Ice Lance cards
- Fixed an issue when viewing run histories in Russian where the player played as The Defect
- Fixed an issue with Buffer+ card’s description when playing in Portuguese
- Fixed an issue with Call of the Void card’s hovertips when playing in Castilian Spanish
- Fixed an issue with Colossus card’s hovertips when playing in German
- Fixed an issue with the “Accept” option in The Trial event when playing in French
- Fixed an issue with the “Violence” option in the Tinker Time event when playing in Korean
LOCALIZATION:
- Added more translated text for various languages
- Fixed translation and formatting errors for the following languages:
- Italian
- Russian
- Simplified Chinese
- Turkish
- German
- Spanish
- Polish
- Adjusted Japanese font to be rendered slightly smaller and raised to improve vertical centering
- Improved Korean font spacing
- Improved Russian and Thai font rendering
- Improved the look of Simplified Chinese font
- Share button in stats screen now utilizes correct localized string
MODDING:
- Reworked mod structure
- mod_manifest.json has been moved outside of the PCK. All mods should now ship with an additional file named .json – see ModManifest for the new JSON structure.
- PCK is no longer required for all mods. Json is the only file that is required to declare a mod. The json must declare whether the mod includes a pck/dll file.
- settings.save now includes a list of all mods that were loaded in the last game run. Reordering this list affects load order.
- Mods may declare dependencies in the manifest. If settings.save declares a load order incompatible with the listed dependencies, then a re-sort is forced.
- Added affects_gameplay field to mod manifest. If false, then the mod will not be checked against the host’s mods in a multiplayer game.
- Updated 0Harmony/MonoMod to support mac arm64. Manually overwriting it should no longer be required.
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Slay the Spire II
Developed by Mega Crit Games
