About six years ago, they had a Monopoly Money Train slot that almost certainly had some sort of malfunction. After getting four max bonuses in a row, we started playing it at full coin and over about 16 hours got about 50 max bonuses in a row. We only stopped playing when security told us to get up so they could replace the bill acceptors and when we did, they put out of service signs on the entire bank. The next day, the bonuses were back to normal.
Just to clarify, what I'm calling a max bonus means the train circled the entire board, not that each bonus paid out some max amount of coins. Most times in this game, the bonus train would run out of steam somewhere between the Go to Jail spot and Free Parking. This machine hd the train getting back to Go so you collected the higher rents and the Pass go bonuses.
