MOSAYK Original

CHIMAXThe 13-card numeracy card game

One of five finalists from 500+ applicants · 2026 Hornets Innovation Summit presented by Bank of America

Feel Your Mind Start CHIMAXXING

  • Numeracy · Strategy · Memory
  • 13 cards
  • 2+ players
  • 10 colorways
  • Screen-free

Thirteen cards. One sequence. One minute to learn. Every flip asks you to focus, remember and decide, until you can feel your mind working one move ahead. That's CHIMAXXING, at the table, with the people next to you. Make CHIMAX your game of the year.

PLAY NOW SHOP CHIMAX How CHIMAX works
Ordering 100 card-sets or more? →

Ten colorways. Ten modes. Pick yours.

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  • 13 cards in every set
  • 2+ players
  • 10 colorways
  • 6.2B possible arrangements

Make room for a little more MAXXING

Thirteen cards. Zero screens. All smiles.

Students and families laughing, counting and bluffing around one table. No device required.

⚠️ ARE YOU READY TO TAKE THE CHIMAX CHALLENGE? ⚠️

Thirteen cards. One sequence. Can you find it?

Flip, remember, and build the sequence from One-Half to Infinity. Every correct move opens the path to the next card.

6,227,020,800
Arrangements remaining
0.00%
Eliminated
0
Flips
—
Efficiency

Find ½ first. Tap any card to begin.

See the full rulesSHOP CHIMAX

Target sequence: ½ → 1 → 2 → 3 → 5 → 10 → 15 → 25 → 50 → 100 → 0 → ? → ∞

Choose your colorway

CHIMAX is a 13-card numeracy card game you can learn in a minute and play as several different games. Screen-free strategy and memory play for families, schools and teams, and one of five finalists at the 2026 Hornets Innovation Summit presented by Bank of America. More play, more possibility: that's CHIMAXXING.

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cardgame_chimaxCHIMAX - Limited EditionMOSAYK.COMMOSAYK.COM

Limited edition

The three-deck set, for people who already know the game.

One CHIMAX set teaches you the order. Three sets change what the game can do — deeper tables, genuinely harder bluffing, and the matching formats a single deck cannot run. A limited run, not restocked on a schedule.

  • Three complete sets. Thirty-nine cards, three of every rank, plus one additional Question Mark.
  • Harder bluffs. Declare the Question Mark as 50 and there are now three real 50s that can take it off you.
  • CHIMAX Match becomes playable. Matching formats need two or more sets. This is the box that opens them.
  • Built for a full table. Three piles of thirteen, and nobody sits out.

$99.99 Three complete sets. Not a discount bundle — a different game.

View the Limited Edition

New to CHIMAX? Start with a single deck and come back for this one.

Where will CHIMAX go next?

For families A screen-light game night that actually holds attention. SHOP CHIMAX → For educators Classrooms, libraries, camps and youth programs. Education inquiry → For organizations Volume pricing, custom branding, purchase orders. Request pricing → For retailers and partners Wholesale, licensing and brand collaboration. Partner with us →

Pass it on

Know a family who'd love this?

CHIMAX grows one table at a time. Send a friend the 13-card game that gets everyone playing together, no screen required.

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