0.99.1|Mar 17, 2026
View on Steam↗Patch Notes - v0.99.1
3/5 Moderate
Slay the Spire 2 v0.99.1 introduces a complete modding structure overhaul, a 999,999,999 HP cap for all entities, and dozens of critical stability fixes for multiplayer and localization.
Key Changes
- 1Complete rework of the modding structure and manifest system
- 2Implemented a hard HP cap of 999,999,999 for all entities
- 3Fixed numerous multiplayer softlocks and map generation divergences
- 4Added portrait art for Feeding Frenzy, Sloth, and Waste Away
- 5Fixed critical crashes for Windows cloud saves and Turkish locale systems
- 6Native Mac ARM64 support for modding tools
- 7Fixed Fairy in a Bottle and Lizard Tail logic for 1 Max HP builds
- 8Extensive font and rendering improvements for Asian and Cyrillic languages
- 9Fixed Doormaker HP scaling issues in multiplayer
- 10Resolved state divergence issues with Huddle Up and Potion usage
All Changes
⚔️Gameplay Systems(1)
- changeHP Cap: Implemented a maximum HP cap of 999,999,999 for players, enemies, and pets
🎨Visuals(4)
- newMurderous: Added a new icon for the Murderous run modifier
- newFeeding Frenzy: Added portrait art for the Feeding Frenzy card
- newSloth: Added portrait art for the Sloth card
- newWaste Away: Added portrait art for the Waste Away card
🐛Bug Fixes(45)
- fixUI: Fixed controller B button closing settings when focused on a dropdown
- fixPotions: Fixed crash when interacting with potions during combat transitions
- fixCloud Saves: Fixed crash when syncing cloud saves on Windows
- fixSave Data: Fixed rare save data loss on Windows during power failure
- fixUI: Fixed crash when quickly navigating away from menus
- fixDev Console: Fixed dev console command matching on non-English locales
- fixGameplay: Fixed potential softlock when auto-played cards trigger grid or card selection
- fixPotions: Fixed state divergence when discarding potions immediately after combat
- fixUI: Fixed ability to 'peek' in card screens outside of combat
- fixUI: Fixed settings menu closing without closing open dropdowns
- fixUI: Fixed settings scrolling down when navigating dropdown items
- fixGameplay: Fixed softlock when auto-played cards triggered card selection
- fixHellraiser: Fixed Hellraiser power playing Strikes when no valid targets exist
- fixFairy in a Bottle: Fixed Fairy in a Bottle and Lizard Tail not healing when Max HP is 1
- fixMassive Scroll: Fixed Massive Scroll description regarding Colorless multiplayer cards
- fixLasting Candy: Fixed softlock when proccing Lasting Candy from tutorial rewards
- fixHand Drill: Fixed Hand Drill applying Vulnerable to player if Burn breaks block
- fixKaiser Crab: Fixed missing Kaiser Crab boss death VFX
- fixKaiser Crab: Fixed Kaiser Crab face animation loop after claw damage
- fixRock Bowlbug: Fixed missing 'Stunned' text for Rock Bowlbug
- fixBrightest Flame: Fixed Tezcatara's Brightest Flame decreasing Max HP below 1
- fixJungle Maze Adventure: Fixed softlock when dying in Jungle Maze Adventure event
- fixRoom Full of Cheese: Fixed softlock when dying in Room Full of Cheese event
- fixPotion Belt: Fixed softlock when player has both Potion Belt and Alchemical Coffer
- fixMultiplayer Lobby: Fixed controller navigation failure when unreadying in lobby
- fixWhispering Earring: Fixed turn-end failure when dying while Whispering Earring autoplays cards
- fixDoormaker: Fixed Doormaker's Door HP scaling after escape
- fixPotions: Fixed softlock when queueing a potion throw after enemy death
- fixMultiplayer: Fixed crash when returning to map after loading multiplayer save
- fixMultiplayer: Fixed host and client generating different maps from same seed
- fixMultiplayer: Fixed map changing on reconnect with Big Game Hunter, Treasure Map, or Golden Compass
- fixMultiplayer: Fixed softlock caused by player dying with cards in hand
- fixHuddle Up: Fixed state divergence when playing Huddle Up during another player's selection
- fixMultiplayer: Fixed timing-related state divergence at end of combat
- fixGameplay: Fixed rare instances of getting stuck at an empty chest
- fixBreakthrough: Fixed softlock when player dies to Breakthrough card's self-HP loss
- fixArchitect: Fixed softlock at the end of the Architect event in multiplayer
- fixIronclad: Fixed crash when selecting Ironclad on Turkish locale systems
- fixLocalization: Fixed Russian card descriptions showing raw template text for multiple cards
- fixThe Defect: Fixed Russian run history issue when playing as The Defect
- fixBuffer+: Fixed Buffer+ card description in Portuguese
- fixCall of the Void: Fixed Call of the Void hovertips in Castilian Spanish
- fixColossus: Fixed Colossus card hovertips in German
- fixThe Trial: Fixed 'Accept' option in The Trial event for French
- fixTinker Time: Fixed 'Violence' option in Tinker Time event for Korean
🌐Localization(7)
- newLocalization: Added more translated text for various languages
- fixLocalization: Fixed translation and formatting errors for Italian, Russian, Chinese, Turkish, German, Spanish, and Polish
- changeJapanese Font: Adjusted Japanese font size and vertical centering
- changeKorean Font: Improved Korean font spacing
- changeFont Rendering: Improved Russian and Thai font rendering
- changeChinese Font: Improved visual look of Simplified Chinese font
- fixUI: Fixed Share button in stats screen to use correct localized string
🛠️Modding(6)
- changeModding: Moved mod_manifest.json outside of PCK and updated JSON structure
- changeModding: PCK files are no longer required; mods can be declared via JSON only
- newModding: Settings now track and reorder loaded mods based on last run
- newModding: Added support for mod dependency declarations and forced re-sorting
- newModding: Added affects_gameplay field to manifest to bypass multiplayer mod checks
- changeModding: Updated 0Harmony/MonoMod to support Mac ARM64 natively
Summary
Overview
This update brings all changes from the recent beta branch patches to the main branch. The focus is heavily on technical stability, particularly addressing softlocks in multiplayer and refining the modding framework.
Gameplay & Balance
A hard cap of 999,999,999 HP has been implemented for players, enemies, and pets to prevent overflow issues. Several relics like Fairy in a Bottle and Lizard Tail received logic fixes for low-HP scenarios.
Modding Rework
The modding system has been redesigned for better accessibility and dependency management. Mods no longer strictly require PCK files, and a new manifest structure allows for gameplay-impact tagging and forced load ordering.
Visuals & Localization
New portrait art has been added for three cards, and the Murderous modifier now has a dedicated icon. Extensive localization fixes were applied across Italian, Russian, Chinese, and several other languages to fix crashes and rendering issues.