What Are Decks?
Until now, every draw in ComposerDeck came from our catalogue. You picked a genre, set your card count, and the engine dealt the constraints.
Decks flip that around. A deck is a curated collection of cards that you assemble yourself: pick from the approved catalogue, add cards you created, give it a title and a description, and it's yours. Up to 100 cards per deck.
And here's the part we're most excited about: every public deck gets a share link. Send it to anyone and they land on your deck's page, one click away from drawing from it. No account, no setup. Your constraints, in their hands, instantly.
A music teacher builds a deck for this week's class. A producer builds a "remix challenge" deck for their followers. A band builds a writing-session deck before going into the studio. Same feature, three superpowers.
How It Works
Create a deck from the new Decks section in the studio: name it, describe it
Add cards from the approved catalogue, including your own creations
Make it public and share the link: anyone who opens it can load your deck in one click
Draw: by default the whole hand comes from the deck, or dial it down to mix deck cards with the regular engine
Full deck, or deck + engine
When you load a deck, your next draw pulls 100% from that deck by default. That's the mode deck creators design for. But in Studio mode you can also choose how many cards of your hand come from the deck, and let the ComposerDeck engine fill the rest. A little bit of your teacher's homework, a little bit of chaos.
Your Cards, Your Deck
Decks pair naturally with card creation. You can propose your own cards from the contribute page, including devious red MALUS cards, and once they're approved they're available to slot into your decks.
One thing we locked in on purpose:
- Every card in a public deck is moderated. A public deck only ever contains approved cards, so any deck link you open is safe to draw from. Your private drafts can also hold your own cards while they wait for review.
Everything Else in 2.5
Decks headline the release, but 2.5 wraps up a whole season of community features:
SoundCloud & External Embeds
Link your SoundCloud (and other platforms) on submissions: tracks now embed and play right on the submission page.
Follow Producers
Found someone whose draws you love? Follow them and keep up with their submissions from their profile.
Community Leaderboard
The leaderboard now has its own place in the studio: top contributors and most-liked tracks, in the top navigation on desktop and one tap from your profile on your phone.
Better Profiles & Submissions
Rename your submissions, browse sibling takes on the same draw, and enjoy a profile that ties your whole body of work together.
Under the hood, 2.5 also improves error monitoring on the web app, plus a smoother onboarding tour for newcomers.
Start Your First Deck
Decks are live for everyone, on the web and in the iOS app (one deck on the free plan, up to 100 with Pro). If you build one you're proud of (a teaching deck, a genre bootcamp, a malus gauntlet), share the link with us.
Ready to build your deck?
Curate your cards, grab your link, and put your constraints in someone else's hands.
Create Your First DeckUpdated October 2026: details that changed since publication (share links, private drafts, the iOS release, the leaderboard on phones) were updated, and a line about card author credits, a feature that has not shipped, was removed.