Sprouts is a game for two players. All you need is paper and a pencil.
The game of Sprouts was invented in 1967 by two mathematicians John H. Conway and Michael S. Paterson, when they were both at the University of Cambridge in the UK. The game was popularised by one of Martin Gardner’s “Mathematical Games” columns in Scientific American. Here is a quote from Conway:
“The day after sprouts sprouted, it seemed that everyone was playing it, at coffee or tea times, there were little groups of people peering over ridiculous to fantastic sprout positions.”