The three casinos in Massachusetts cumulatively generated $81.4 million in revenue last month from hundreds of millions in wagers and Encore Boston Harbor in Everett accounted for about 60 percent of it.

In its first full month of operations, the Wynn Resorts property pulled in more than $48.57 million in table game and slot machine revenue. MGM Springfield posted its third-worst month in July but still counted $20.4 million in revenue and the slots parlor at Plainridge Park Casino generated $12.5 million last month, the Massachusetts Gaming Commission reported in its monthly revenue roundup.

Table game revenue accounted for more than half of Encore’s July haul, totaling $27.42 million while slots brought in another $21.15 million last month. Gamblers put more than $262.4 million into the 3,158 slot machines at Encore and the house kept about 8.06 percent of it.

At MGM Springfield, which opened last August, gaming revenue rose slightly from June to $20.4 million in July. Last month was only the third time since it opened that the casino’s monthly revenue has dipped below $21.2 million. Slot machines were the driver of MGM’s revenue in July, accounting for more than three-quarters of the casino’s take. Gamblers got back about 91.17 percent of the $175.63 million wagered on the Springfield slots.

At the slots-only facility in Plainville, gaming revenue dropped to its lowest point since January at $12.5 million. Plainridge Park Casino had the most generous payout on its slots – 92.08 percent – last month.

Between the three casinos, gamblers in Massachusetts last month wagered just shy of $600 million on slot machines alone. Because the amount of money wagered on table games is not tracked the same way money wagered on slot machines is, an estimate of the total state casino wager for the month is impractical.