There are plenty of activities players can participate in while not progressing through Red Dead Redemption's narrative or completing an otherwise noteworthy mission. Activities like Poker, Blackjack, Five Finger Fillet, Cattle Herding, and more all provide a form of entertainment to occupy players while exploring the world of Red Dead Redemption as the game's rugged protagonist, John Marston.
Source:https://www.cbr.com/rdr1-arm-wrestling-guide/