Every game or games played upon billiard tables shall be deemed and considered unlawful, and are hereby prohibited, except only the game played with 2 balls, the game played with 3 balls, the game played with 4 balls, and the game commonly called pool, such being the usual games of billiards. City Code, 1879, art. 33, §3 1893, art. 33, §3 1927, art. 25, §2 1950, art. 19, §2 1966, art. 15, §9 1976/83, art. 15, §9 Rev. Ords. 1858-036