What is "goofspiel"

n. A card game, of interest in game theory, in which each player is given one suit of cards and makes secret bids for cards of the remaining suit, every card being worth its face value.

Goofspiel, also known as The Game of Pure Strategy or GOPS, is a card game for two or more players. It was invented by Merrill Flood while at Princeton University in the 1930s, and Alex Randolph describes a similar game as having been popular with the 5th Indian Army during the Second World War.

The game is simple to learn and play, but has some degree of strategic depth. It is commonly used as an example of multi-stage simultaneous move game in game theory and artificial intelligence.