* They introduced "mouse roulette," with a mouse released into a cage onto a circular board with numbered holes. The mouse would eventually go into one of the holes, and the number on the hole would be the winning number.
It was a true carnival-type attraction, that won much more in publicity, than it's short life on the floor would indicate.

Players found that they could make noises that made the mouse run into the nearest hole.
They also found that mice would eventually follow the scent of previous mice left in a hole, such that the game was really unmanageable and the game was removed.