Nim is a very old game that is usually played with stones or tokens. But it's also a game that can be played with pen and paper. Draw 1, 3, 5, and 7 marks in the shape of a pyramid as shown in the illustration. The objective is to force your opponent to cross out the last remaining mark. Players alternate turns crossing out as many marks as they wish on each turn. However, they can only cross out marks on one line per turn.
You can't go wrong with this classic pencil and paper game! You can use graph paper, but it's not necessary; simply plot out dots in an array. Watch the video below to see how to play!