Open-source combo docs for every engine

Open Combo Codex

A sleek, fast, tournament-ready Yu-Gi-Oh! combo browser where every route is easy to inspect, copy, favorite, and improve through Markdown pull requests.

You can also sign in (top-right) and use the visual editor to submit combos for review without touching Git.

27

Live combos

2

Contributors

33

Starter cards

6

Engines

Built for quick event checks: filter by starter, copy a line, favorite it, then submit clean Markdown improvements later.

Engines

Pick a library

Ordered by the current YGOPRODeck tournament archetype ranking when available, with unranked roadmap engines last.

Featured

Start here tonight

The highest-value routes for learning all engines quickly.

Beginner Combos

Amalthe into Diactorus Setup

DoomZ Break - Diactorus pressure with searched DoomZ follow-up.

Beginner Combos

Aramasa Starter into Ritual Setup

Futsu no Mitama no Mitsurugi or another Ritual Monster backed by searched follow-up and possible Great Purification access.

Beginner Combos

Basic Engage into Shizuku Setup

Shizuku, Raye in GY, and an End Phase search that turns Engage into a stable control setup.

Combos

Browse the codex

Showing 1-6 of 27 combosBy vote score · Page 1 of 5

Deck Lists / Resources

Practice from a real shell

Sample shells for every live engine, plus a generic interaction package.

Banlist-sensitive
Showing 1-2 of 7 shellsPage 1 of 4

Sky Striker

Sky Striker Core

A compact engine package to start testing lines before tuning flex slots for a format.

Main Deck Core

  • - 3 Sky Striker Ace - Raye
  • - 1-2 Sky Striker Ace - Roze
  • - 1 Sky Striker Mobilize - Engage!
  • - 1 Sky Striker Mecha - Hornet Drones
  • - 2-3 Sky Striker Maneuver - Linkage!
  • - 1 Sky Striker Airspace - Area Zero
  • - 1 Sky Striker Mecha Modules - Multirole
  • - 2 Sky Striker Mecha - Widow Anchor
  • - 1 Sky Striker Mecha - Shark Cannon

Extra Deck Core

  • - 1 Sky Striker Ace - Kagari
  • - 3 Sky Striker Ace - Shizuku
  • - 2 Sky Striker Ace - Hayate
  • - 1 Sky Striker Ace - Kaina
  • - 1 Sky Striker Ace - Zeke
  • - New support slots: Zero / Amatsu as format testing allows

Kewl Tune

Kewl Tune Core

Tuner-focused package for Cue starters, Mix lines, and Loudness War interaction routes.

Engine Package

  • - 3 Kewl Tune Cue
  • - 2-3 Kewl Tune Mix
  • - 1-2 Kewl Tune Loudness War
  • - 1 Kewl Tune Synchro
  • - 1 Kewl Tune JJ
  • - Playlist / field spell flex as format allows

Support Slots

  • - Hand traps and board breakers
  • - Extra Synchro levels for B2B / disruption lines
  • - Called by the Grave where legal

Open-source by design

Combos are Markdown, not locked content

Open Combo Codex is built so players can correct lines, add variants, and publish new engines by editing plain `.md` files in a GitHub repo. The app turns those files into searchable combo cards.

Visual editor

Sign in with the button in the top-right header, then use the visual editor to fill out a combo and submit it for review—no GitHub CLI or Markdown workflow needed for new lines on existing engines.

Contribute on GitHub

Add a file

Create `content/combos/<engine-id>/new-line.md`.

Use frontmatter

Fill title, starters, steps, notes, and end board.

Open a PR

Reviewers can audit one combo at a time.