Card Codex
Every card, every rule, every pack explained. Free in your browser, no download.
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Card Codex
Every card, every rule, every pack explained
About Card Codex
Card Codex: Every card, every rule, every pack explained. Solo modes are for thinking at your own pace: puzzles with one right order, a coached table, boss battles and an endless gauntlet.
What's inside
- Every card face, its points and its dark-side twin
- Every rule: stacking, the Riot Meter, combos, the mercy rule, Eclipse, Eruption, Anything Goes, Crazy Eights, formats and scoring
- Twelve strategy tips that beat Sharp and Ruthless rivals
Frequently asked questions
Is Card Codex free to play?
Yes. Card Codex and every other Prism Riot mode are free in your browser with no download, no sign-up and no account. Progress is saved in your browser.
Can I play Card Codex offline?
Yes. After your first visit Prism Riot works offline — add it to your home screen from the browser menu and it opens like an app.