Nash Equilibrium

Radio stations KLNK and WAPP can each choose between a rock and a country format. If both choose the same format they will split the audience, and that reduces their payoffs. Here are their payoffs.

KLNK
country rock
WAPP country 20,20 40,30
rock 30,40 15,15

In a Nash equilibrium for this game,

KLNK and WAPP both play country
KLNK and WAPP both play rock
KLNK plays rock and WAPP plays country
KLNK plays country and WAPP plays rock
either of the last two