Mix up family game night with Proof!

What is Proof?

Proof! is an award-winning, fast, fun, and addicting card game that the whole family can enjoy! For 2 - 6 players, ages 9+, and taking only 15 minutes, Proof! will have you showing off both your math skills and creative thinking as you race to find equations hidden among nine number cards.

Got the cards 2, 8, and 10? Concoct an equation like 10 - 2 = 8!

Working with 2, 5, 5, 10, and 20? Conjure up a beauty like 5 + 5 = 20 ÷ 2 = 10!

Allowing you to use almost any math symbols and all sorts of crazy equations, Proof! is unlike most math games: engaging for both students in a classroom and adults at a party.

Proof! is also the inspiration behind our infamous online Math Puzzle Challenges. For the more puzzle-minded players out there, each week we post a new set of nine cards that hides a challenging equation. See if you can find the proof!

Full game instructions for the card game can be found here.

Still can't get enough Proof! in your life? Check out the free, online game where you can compete with friends to rise up on the daily leaderboard. Or get those gears turning with one of our 300+ brain-benders called the Proof! Math Puzzle Challenges. Each carefully constructed puzzle consists of a set of nine cards that hides a challenging equation. Can you solve them all?

Proof! was created by Evermade in New York City. And if you like Proof!, you may also enjoy our other math game, Adsumudi.

How do you play?

One player volunteers to be the dealer, shuffles the deck, and then places nine cards face up as a 3-by-3 grid in the center of the table. At the same time, all players (including the dealer) study the cards in the grid and try to create an equation using at least three cards and as many math symbols as needed. For example, the cards 2, 4, 7, and 1 above could be arranged to make 2 + 4 = 7 - 1.

When a player finds an equation, she shouts the result, such as “Six!”, which immediately locks out all other players and gives her a chance to prove that the math works. If the proof checks out, she takes the three or more cards that were involved and keeps them in front of her.

Every time an equation is found, the dealer replaces the cards that were taken with new ones so that there are always nine cards face up in the grid. Players continue finding equations until all the cards in the deck are used up and no more equations can be found.

Once all the cards in the deck are gone and no more equations can be made, the game is over and players count up their points. Each card is worth 1 point and the player with the most points wins!

Full instructions can be found here.

Has Proof! won any awards?

Yes!

Proof! (along with our other math games) most recently won the 2024 Family Choice Award as an "exceptional product that enriches a family’s lifestyle and creates memorable experiences." The Family Choice Awards further commented, "The creativity and extraordinary imagination utilized to develop new products and enhance existing products for the benefit of consumers, continues to amaze our distinguished judges and staff."

Proof! has also notably won the 2019 Teacher's Choice Awards, with its teacher evaluators raving that Proof! is "an awesome, fun game for students to engage in while learning math" and that they "would definitely recommend this game" for use in the classroom and at home.

Further awards include a Parent's Choice Silver Award, the Academic's Choice Brain Toy Award, and the Creative Child's Game of the Year Award in 2020.

Proof! also participated in the 2018 Mensa Mind Games competition, and many of its brainy members gave it top marks saying, "LOVE this game!", "Fast moving and different!", and "A real thinking person's game!".

What is the Proof! Online game?

Our free, online Proof! game plays just like the classic card game! Click or tap to deal nine cards and enter your equation. Earn points for each card you use and compete with friends to rise up on the daily leaderboard.

What are the Math Puzzle Challenges?

The Proof! tabletop card game is the inspiration behind our infamous, online Math Puzzle Challenges. Whether you're going for extra credit or just a quick brain stretch, check out our 300+ math puzzles. Each one look like a regular game of Proof!, but the nine cards hide a challenging equation. Can you solve them all?

Do you have any multiplication games?

Surprisingly (or perhaps not!) this is a common question among teachers and parents looking to help their aspiring mathemagicians learn multiplication and math in general. The Proof! tabletop math game is definitely a fun and effective tool for getting in a ton of practice with addition, subtraction, multiplication, and division, as well as for sharpening those mental math skills.

But our free, online Math Puzzle Challenges are also a great way to get that practice in! If you're looking to work on specific math skills, such as multiplication, we've even hand-selected specific types of our math puzzles so you can focus on the type of math you enjoy (or the type of math you need to improve!). Check out our curated list of Math Puzzle Challenges below!

Addition Games - Practice those pluses
Subtraction Games - Subtract away those math fears
Multiplication Games - The Times Square of times
Division Games - Divide and conquer
Fraction Games - You're already half way there
Square Root Games - Get to the root of it
Puzzle Games - Devilish digits and tricky twists
Math Games For Kids - Fun and educational

Who made it?

Proof! is made by Evermade. Founded in 2016 by Shaun and Lauren Salzberg, Evermade creates, manufactures, and sells award-winning smart games and puzzle books for kids and adults.

Evermade makes math games such as Proof! and Adsumudi, word games such as Snippets, and The Master Theorem puzzle book.

Our team is always hard at work creating new family-friendly games. You can sign up for our newsletter or follow us on Instagram to stay up-to-date on new announcements.

All games are available worldwide and proudly made in the USA.

What comes in the box?

Proof! comes with 100 number cards and an instructions booklet. With numbers ranging from 0 - 100, some easier cards appear more than once and some not at all, a mix that was carefully crafted for optimal fun.

Where can I buy it?

Proof! is now available for purchase online and at select retail partners.