Austin police seized more than one-thousand eight-liner gambling machines from 23 businesses accused of awarding illegal prizes.
Yesterday's raid was the largest of its kind for the area.
Police did not arrest any of the owners or operators of the businesses. Authorities say misdemeanor gambling charges could be filed in the coming weeks.
The eight-liner machines resemble slot machines but have a grid that gives players eight ways to win. The machines are legal, but Texas law limits winnings to non-cash prizes worth less than five dollars.
Police say machine operators in yesterday's bust were paying cash.
Acting Police Chief Cathy Ellison says investigations began when police noticed an increase in robberies near some of the businesses. She says there have also been complaints from neighboring businesses and residents, and people who lost money.