TOP SUM

Stack and sum your way to victory!

Play cards, crunch numbers, and outsmart your friends. Whatever your maths experience, let's get shuffling!

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"SUM"

/sʌm/
"...the total amount resulting from the addition of two or more numbers, amounts, or items."

Add, stack, and win—can you beat the sum?

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Game features

Stack, sum, and outsmart

Drop number, function, and operations cards to rack up points. Endless fun with new techniques and tricks to learn ever time!

Play free
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Why you'll love it

Multiple difficulty levels cater from beginners to advanced mathematician. And with very simple rules—everyone can play! Every game is a new adventure!

INFO HUB

Updates & News

TOP SUM has just launched - but there's still so much more coming!
From new game modes to new cards and products, always stay tuned for the next exciting releases to level up your maths game!

In Development: VS BOT Mode

Play against a bot and get the higher sum! Max out your own sum while try to minimise your opponents!

In Development: Algebra Deck

Apply functions to the new X card, to store and stack up operations to boost your score to the max!

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In Development: Fractions

With the new Fraction cards in Difficulty Level 2, you can go higher by dividing! Or create wacky sums! The possibilities are endless!

In Development: VS Player

It's as simple as it sounds! Play against your friends to get the TOP SUM!

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Tips & tricks

Boost your sum game

Master quick math, clever combos, and wild card plays. Outsmart the table and climb the leaderboard!

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How-to

Easy ways to win rounds

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News

Fresh features & updates

FAQ: Quick-fire answers

Questions? We’ve got you covered

Wondering how to play, win, or join the fun?

How do I jump into a game?

Click ‘Play downloads, no hassle—just instant number fun in your browser.

What’s the main objective?

Rack up the biggest total by playing number, function, and  cards. Currently, TOP SUM supports infinite play, while objectives and mini-games will be added in the future.

Can I play with others?

Not yet. But you can still compete with your friends to see who gets the highest sum in the same time!

Any pro tips for winning?

Practice, practice, practice. Also, try to understand the real mathematics behind the cards you play - these can unlock hidden insights on how to score BIG!

Is it really free?

Totally! Play for free anytime.

How do I share feedback or report bugs?

We want to hear from you! Feel free to email us at the email in the footer.

Stack up your skills. Score big. Have a blast.

Jump in—mix, match, and outsmart your friends in every round!

Start playing