The Game of Mental Math Magic!

Fast, fun, and addicting!

Proof! is an award-winning math game that the whole family can enjoy. Fast, fun, and insanely addicting, this lightning-quick card game will have you working that mental math magic as you race to find creative equations hidden among nine number cards. Keep what you find and collect the most cards to win!

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

Working with the cards 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: it's engaging for both students in a classroom and adults at a party.

Proof! is also the inspiration behind our infamous, free, online game, the Weekly Challenge Math Puzzles. 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 instructions for the card game can be found here.

Proof! was created by Evermade in New York City. It is for 2 - 6 players, ages 9+, and takes less than 15 minutes to play. And if you like Proof!, you may also enjoy our other math game, Adsumudi.

See below for a great review of the game from TTPM: