UNDATED (WSAU)  Some Wisconsin grocery customers are grumbling, after nobody won the top prizes in a Monopoly game that was played at Roundy’s stores from May-through-August. Customers received free game pieces at Pick-‘N-Save, Copps, Metro Market, and Mariano’s stores. Only a third of the $4.5-million in prizes were actually awarded. The top eight prizes were all unclaimed – including a quarter-million-dollar house, a new car and a $30,000 kitchen makeover.

Multiple pieces were needed to win each prize, and two extremely rare pieces were needed to win the house.

Roundy’s is based in Milwaukee, where the Journal Sentinel quoted a statistical professor as saying the odds of winning the house were 1-in-575-billion at the most. And those odds were 33 times worse than the chances of winning the Powerball jackpot, which is only 1-in-175 million. The newspaper said folks whined on message boards, but nobody filed a complaint with the state’s consumer protection agency.

The company said the game was meant to be fun, and provide value for customers. It was also played last year, but Roundy’s said fewer people played this year.