Green’s Dictionary of Slang

(US) dice, or the game of craps.

1920		Arizona Republican (Phoenix, AZ) 9 Aug. 7/2: He produced the cuboid ivories called Mississippi marbles by some and Alabama gold balls by others.
1926		F.W. Pollock ‘The Current Expansion of Sl.’ in AS II:3 146: A certain game of dice, formerly ‘crap,’ now enjoys distinction under such names as ‘Mississippi marbles,’ ‘African golf,’ and ‘Senegambian cricket’.
1949		Monteleone Criminal Sl. (rev. edn).
2004		‘Animated Dominoes, Dice’ at Old and Sold 🌐 Some crap-shooting terms fade but a few have proved durable: Mississippi marbles: dice.

see mud n. (2a)

(US) illicitly distilled, ‘bootleg’ bourbon.

1967

in DARE.