Spire Codex

Spire Codex the complete database for Slay the Spire 2 is now available on Overwolf.

Press a hotkey mid-run to look up any card, relic, monster intent, event branch, or game mechanic without alt-tabbing out. The right rail mirrors your live deck, relics, potions, HP, gold, and act, parsed directly from STS2's save data as you play. Finished runs auto-upload to spire-codex.com, attached to your Steam persona once you sign in.

The full Slay the Spire 2 database is reverse-engineered straight from the game files: card cost, damage, keywords, monster HP ranges, ascension scaling, event choice trees, attack patterns, encounter pools, and changelog diffs per patch. Available in all 14 languages STS2 ships with. Patch day? The database updates within hours, not weeks.

What you can do with it

Quick Peek. Ctrl+Space pops a floating search box on top of your run for fast peeks. Shift+F9 opens the full overlay with card descriptions, win rates, monster stats, mechanics references, glossary, guides, and Steam news.

Live run tracker. Your current deck, relics, potions, HP, gold, ascension, and floor stream into a sidebar panel as you play. Past runs are browsable and replayable with the same layout as spire-codex.com.

Multi-monitor companion. On dual-monitor setups, Spire Codex automatically opens a full desktop window on your secondary display the moment STS2 launches. Leaderboards, build guides, encounter pools, and the live tracker, all visible without ever covering the game. Community leaderboards. Auto-upload settles every finished run into searchable leaderboards by fastest win, highest ascension, character, and more. Customization

Rebind every hotkey from Overwolf Settings. Toggle the in-game overlay, click-through mode, the quick-peek, the desktop window, and the in-game hotkey reminder. Light and dark themes, dyslexia-friendly font, color-blind safe palette, adjustable text size and overlay opacity. Sign in with Steam to attach your run history to your persona;skip sign-in and run anonymously.

Built for STS2 players Spire Codex is an unofficial fan project, not affiliated with Mega Crit. All game assets remain the property of their respective owners. Source available on GitHub. Feedback welcome via the in-app form or our Discord.