The Potion of Madness slot starts with five reels and three rows, but the grid may expand during the bonus features. This also affects the number of paylines: you start with 10 but may progress to 40.
The symbols pay as follows:
Monster: 30x, 6x, 3x
Scientist: 10x, 5x, 2.5x
Lab Equipment: 6x, 3x, 1.5x
Microscope: 6x, 3x, 1.5x
Watch: 4x, 2.5x, 1x
Newspapers: 4x, 2.5x, 1x
A, K: 3.5x, 2x, 0.5x
Q, J: 3x, 1.5x, 0.5x
10: 2x, 1x, 0.5x
Beaker: Scatter symbol, Respin symbol
The Potion of Madness game pays based on the total bet value.