The 7 Card Challenge
Seven simple cards are laid out and players look for "Zero sumZ". Whoever finds and collects the most cards wins!
Zero sumZ is the perfect game to play with your family and friends. It is easy to learn, and it exercises your mind.
Try Zero sumZ today, and play it again, and again, and again!
Zero sumZ was created by three north american research scientists, Alejandro, Jon, and Mathieu, in the US and Canada so that they could bring the game to kid's science camps, to their friends, and to their families. They decided to make it publicly available so that everyone could enjoy Zero sumZ.
We hope you love Zero sumZ as much as we do!