The chance card paid off for one Massachusetts casino player.

On a slot machine game themed around Monopoly, an Encore Boston Harbor player won the jackpot prize of $20,187.75. The game is called “Monopoly Express Beijing Railroad.”

The player, whose name was not publicly released, had bet $1 on Aug. 13 to win the prize.

Other jackpot prizes won this month at Encore Boston Harbor include a jackpot prize of $27,164.13 off of a 75-cent bet on the game “Ultimate Fire Link-Cash Falls.” And the jackpot won from the game “Bank Buster” was off of a bet of 80 cents. It was worth $27,395.23.

The casino, which is located in Everett, has more than 2,700 slot machines and more than 175 table games.

Players must be 21 years or older.

In July, Encore Boston Harbor paid out $39,627,206.20 across

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