Prima Codex, independent software studio

Meticulously crafted tools, built to win.

We build focused, lovingly made companion software for the games we obsess over. Our first release is Spire Codex: the complete database, wiki, and in-game companion for Slay the Spire 2.

Get it on Overwolf Explore the database →

Free · Overwolf desktop app and web database · 14 languages, updated within hours of every patch

Spire Codex live run overlay beside Slay the Spire 2, mirroring the current deck, relics, potions, HP, gold, and act
  • 576 cards
  • 293 relics
  • 14 languages

Built for the community that loves the climb

  • Instant in-game lookups, no alt-tab
  • Live run tracker and leaderboards
  • 14 languages, updated every patch
Featured product

Spire Codex

The complete database, wiki, and companion for Slay the Spire 2. Browse every card, relic, character, monster, potion, event, and power. Run the Overwolf overlay while you play and look up anything mid-fight without leaving the game. On a second monitor it opens a full dashboard the moment the game launches.

The Spire Codex card browser, showing a searchable list of cards with full details for the selected card
Complete database, every card, relic, and enemy a click away.
The Quick Peek overlay looking up a power mid-run with Ctrl+Space, over the game
Quick Peek, hit a hotkey to look anything up without leaving the game.
Community leaderboards ranking players by fastest wins and highest ascension
Community leaderboards, see how your climbs stack up.

Everything from the run, nothing in your way

Spire Codex sits quietly alongside the game and hands you the right information the moment you need it.

Complete database and wiki

Every card, relic, character, monster, potion, event, and power, all searchable and filterable by character, rarity, and keyword.

Instant in-game lookups

Press a hotkey mid-run to look up any card, relic, monster intent, or event branch in seconds, without alt-tabbing out of the game.

Live run tracker

The overlay mirrors your deck, relics, potions, HP, gold, and act as you play, read straight from the game with nothing to enter by hand.

Leaderboards and meta

Finished runs upload automatically. Compare your climbs against the community, track daily seeds, and see where the meta is heading.

14 languages, always current

The full database ships in every language the game does, and new builds are pulled in within hours of release, so nothing is ever stale.

Open, self-hostable API

All of the data sits behind a documented API you can build on. Make a bot, a tool, or your own dashboard, or host the whole thing yourself.

About Prima Codex

A small studio with a high bar.

Prima Codex is an independent software studio. We make a deliberately small number of tools and try to make each one feel inevitable: fast, quiet, and respectful of your time and your data.

We started where every good tool starts, with a problem we had ourselves. We wanted a single, reliable place to understand Slay the Spire 2, from the smallest card interaction to the shape of the whole meta. Spire Codex is the result, and it is only the beginning of what we are building.

CraftedDetails obsessed over, not bolted on.
CurrentUpdated within hours of every patch.
FocusedFew products, each done properly.

Climb smarter. Get Spire Codex.

Free, and ready in about a minute. Install the Overwolf app to play with the overlay, or browse the full database right in your browser.

Get it on Overwolf Explore the database

Spire Codex is an unofficial fan project and is not affiliated with Mega Crit or Slay the Spire 2.