The Eugene, Ore. resident was playing slots at the Riverside Resort<a href="http://www.riversideresort.com/"></a> in Laughlin in September when he thought he won a Toyota Prius worth $24,509. But he didn't. It was concluded that the player, who was playing an IGT Used Cars video reel penny slot machine, didnt understand the pay-line pattern on the machine and misinterpreted one of his spins as a win. The machine has five reels and 15 pay lines.How did the casino determine this? Read <a href="http://www.vegasinc.com/news/2013/jan/18/what-happens-when-gambler-thinks-he-wins-and-casin/" >here</a> to find out what steps are taken by the casino and the state Gaming Control Board on at least 100 contested wins per month.