In John Steinbeck's Of Mice and Men, George and Lennie play Pitch (also called Setback or High-Low-Jack).
"George cut the cards again and put them down. He dealt four cards to each of them... 'Pitch,' he said."
They play multiple hands while camping by the Salinas River (Chapter 1) and later in the bunkhouse. It's their ritual—passing time, bonding, dreaming of the farm.
Steinbeck uses it to show their intimacy: George *teaches*, Lennie *trusts*, they *dream* between tricks. The game is a microcosm of their relationship.