I use this game as a fun way to review Algebra 1: function or not a function, domain and range, and graphing linear equations. I have the students sit in groups. I mentioned instructions in document, but another option is to have every team starts out with 10 points. Each slide has a question on it. The students work in groups to get correct answers. For each correct answer, I give that team a point and the opportunity to erase 2 points from another team of their choice. Team with most points at the end wins! The students love it!