"Close to Zero" because the object of the game is to be the player with the score the closest to zero.
I have the student play the game for 2 class periods until they get really good at the game (and calculating their score). In calculating their score, they are learning how to add integers-- how sneaky of me!
I have even had students go home and play this game with their family! This game is great for grades 6-8. I have a power point presentation to explain the rules. (click on the link above)