What is "earthshaker!"

Earthshaker! (ISBN 0-88038-196-5) is a 1985 adventure module for the Dungeons & Dragons roleplaying game. Its associated code is CM4 and the TSR product number is TSR 9128.

Earthshaker! is a pinball game designed by Pat Lawlor and released by Williams Electronics in 1989. The game features an earthquake theme and was advertised with the slogan "It's a Moving Experience!".

Earthshaker! was the first pinball machine with a shaker motor that causes the table to rumble along with the theme of the game.