[header] How to play football squares [title] Draw a 10x10 grid on a large poster board with a permanent marker. [step] You want each square to be large enough to record your players' initials and numbers. The grid should have 100 squares in all-1 for each player. 
Ideally, you should have 100 players total, but this isn't a hard rule. Use a ruler to keep your lines straight as you draw.