This is a very common myth, but no it is not true. Slot machines are not adjusted throughout the day or based on any event at your casino. Slot machines run on a long term projection and even a machine at a lower payback percentage can still pay out the top line awards. When the casino sets a slot machine, they do it with a projection of how much money they will make in the long term. This is typically over 10 million spins. So setting a machine higher or lower during times not only makes no sense, but also hinders their overall projection and can be a complicated process.
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