|sum! sum! zero! is a board game for two players, where you have to find the best strategy to defeat your opponent by adding score, or staying as close as possible to zero. Force your opponent to get a worse score than yours!|
Play against device, or against your friends: Share your device with another player to play by turns, or create your own profile to chat and play against your friends online, you can also play with Android users!
sum! sum! zero! is now free at Windows Phone Store.