This game can be modified to match any subject.  The goal of the game is similar to tic-tac-toe, except the board is 5x5.  Instead of Xs and Os, there are black and white circular pieces.  The PPT version is trigger operated.  The pages at the end of the PPT are for printing out to play in the classroom.  Changing the words can be tedious.  This originial version is for Grade 5, Lesson 1.  Play around in Presentation View to get the hang of all the triggers.