Controls: F for shoot, WASD or arrow keys to move, R to reload. Type your answer when it asks for a math problem. Number of players: 1+ Age of players: 13+ Materials needed: Device capable of internet If you want to play multiplayer, multiple people will take turns playing, and whoever gets the highest score in their respective round wins. The person who takes the first turn can be decided by a coin flip, a dice, or a spinning wheel. (Could be online or real) for a math project