EM games lie somewhere in the middle between fully electronic games and mechanical games.ĮM games have a number of different genres/categories. Examples of electro-mechanical games include Periscope and Rifleman from the 1960s.ĮM games typically combined mechanical engineering technology with various electrical components, such as motors, switches, resistors, solenoids, relays, bells, buzzers and electric lights. Some of these were early light gun games using light-sensitive sensors on targets to register hits. Electro-mechanical games (EM games) operate on a combination of some electronic circuitry and mechanical actions from the player to move items contained within the game's cabinet.
