Hardware & Cabinets
Before the first video cabinets captured the spotlight, arcades were already experimenting with machines that moved, flashed, clicked, and buzzed. Electromechanical games, often called EM games, sat between classic mechanical amusements and fully electronic arcade games. They used a mix of physical moving parts and electrical control to create experiences that felt larger, louder, and more alive than older coin-op machines.
For arcade history, these games matter because they were not just a side path. They helped keep arcade entertainment exciting during the years when pinball was facing public suspicion and long before video games became the default attraction.
What made electromechanical games different?
EM games were built from a combination of moving parts and electrical components. Motors, switches, relays, solenoids, bells, buzzers, resistors, and lights all played a role. Instead of relying only on gears or only on circuitry, they blended both worlds inside a cabinet.
That mix let operators build games with motion, sound, timing, and feedback that felt more dramatic than a simple mechanical device. A player might steer a wheel, press a button, aim a gun-like controller, or trigger a timer while the machine handled the rest with light effects and mechanical action.
In arcade history, EM games are a middle step. They were not video games, but they were no longer just purely mechanical amusements either.
From fairground machines to arcade cabinets
The roots of coin-operated entertainment go back to the early 1900s, when fortunes, strength testers, and mutoscopes were common at fairs and carnivals. As operators began grouping machines together in dedicated spaces, the arcade as a location became more important.
By the 1930s, games like skee-ball and early pinball pushed the idea further. But early pinball was often seen as a game of chance, not skill, and that led to restrictions in some places. EM games helped answer that problem by presenting themselves more clearly as skill-based amusements.
That positioning mattered. If a machine looked and felt like a test of timing, aim, or steering, it had a better chance of surviving in public venues that were wary of gambling concerns.
Why motors, relays, and lights were such a big deal
The magic of EM games was spectacle. A cabinet could simulate a moving road, a target range, a submarine attack, or a sports contest using simple but effective tricks. A spinning drum could carry a painted road past a player’s car. Lights could mark torpedoes or targets. Relays could trigger scores, sounds, and timing events. Bells and buzzers made every hit and miss feel physical.
That is why these games often felt more immersive than their technology might suggest today. The player was not just reading a screen. They were looking into a machine that seemed to respond with motion, noise, and texture.
Some EM titles focused on “novelty” or “land-sea-air” experiences, meaning simulations of vehicles such as cars, submarines, and aircraft. Others were gun games or sports games. A few pushed further into more elaborate audio-visual presentation, using special effects to create a convincing scene inside the cabinet.
The games that pointed toward video arcades
One early milestone was the Nimatron displayed at the 1939–1940 New York World’s Fair. It was not a video game, but it used relays, buttons, and lights to play the game of Nim. It showed that a machine could entertain by appearing to think and respond.
Another landmark was Drive Mobile in 1941, a driving cabinet that used a steering wheel and a moving road display to simulate driving. Later machines refined that idea with filmed footage, projected action, or more complex light effects.
By the 1960s, games like Periscope pushed EM design to a new level. Players looked through a periscope-like viewer to aim at targets while lights and sound recreated submarine warfare. Its success was important not only because it earned well, but because it showed that immersive action could thrive in arcades.
Many ideas that later became familiar in video arcades were already being explored here: time pressure, aiming, simulated motion, and a clear one-player challenge that drew a crowd.
Why collectors and preservationists should care
For arcade buyers and collectors, EM games require a different mindset than video cabinets. These machines are often more like working kinetic sculptures than simple electronics. They can involve worn belts, weak solenoids, tired motors, sticky relays, aging lamps, cracked plastics, and custom parts that are harder to replace than common arcade PCBs.
If you are evaluating one for purchase, check whether the cabinet still has its original moving assemblies, target mechanisms, lighting, and score hardware. Cosmetic wear matters, but missing mechanical subassemblies can be the real challenge. A cabinet that powers on is not necessarily a cabinet that can fully play.
For repair and preservation, documentation is gold. Photos of wiring, relay banks, and linkage assemblies can save hours later. Test each subsystem slowly, and do not assume a silent cabinet has only one problem. In many EM games, one dead motor can keep several features from functioning.
For builders and tinkerers, the lesson is equally useful: these machines show how much arcade drama can be created with very simple components when layout, feedback, and timing are carefully designed.
Related RetroArcade resources
Arcade Machine Buyers Guide 2026
Arcade Repair and Build Resources
Sources and further reading
Electro-mechanical game on Wikipedia was consulted for factual background.
Arcade Machine Buyer's Guide
Repair & Build Resources
Arcade Near Me Directory
Vibe Code Arcade