After a mad last-minute rush to prepare it for display at the 1980 Amusement Machine Operators of America (AMOA) trade show, Williams Electronics debuts what will become its most successful arcade game, Defender. With a more complex control panel than nearly any video game since Computer Space, Defender is ignored at AMOA, only to become a top earner in arcades (and a source of bragging rights for those who master the control scheme). 
Not wanting to miss a piece of the Pac-Man pie, American pinball & video game manufacturer Williams Electronics releases Make Trax in Stateside arcades, one of the few Japanese-made games licensed by Williams for American release. Yet another maze chase game, Make Trax at least has the novelty of turning the player into a paintbrush trying to coat the entire maze with color.
The legendarily tough arcade game Robotron: 2084, designed by Eugene Jarvis (creator of Defender), hits arcades across America and becomes an instant hit. With its two joysticks – one for moving the player’s character, one for firing in any direction – Robotron continues Williams’ hallmark of challenging control schemes, and screws with the fight-or-flight responses of arcade gamers everywhere for years to come.
Williams Electronics unleashes an arcade favorite in the making, Moon Patrol. A rare case of a foreign game (originated in Japan by IREM) licensed for American distribution by Williams, Moon Patrol forces prospective moon buggy drivers to make split-second decisions about whether to shoot oncoming obstacles or vault over them in the moon’s low gravity. The game’s colorful graphics and inordinately jaunty music make it an instant hit.
With the words “Prepare to joust, buzzard bait!”, Williams Electronics launches an arcade sleeper hit built on unlikely juxtapositions (medieval knights, jousting with lances, riding on ostriches, over a lake of lava, stalked by pterodactyls). Joust becomes immensely popular for its simultaneous two-player mode, in which one’s buddy can be as much of a liability as any of the computer-controlled enemies. Whispers of movie deals based on the game are briefly heard before the video game industry’s fortunes change at the end of the year.
Williams Electronics releases the arcade video game Sinistar, designed by Noah Falstein and John Newcomer, and coded by a team including R.J. Mical, Sam Dicker, Ken Graham, and Richard Witt. With digitized pre-recorded speech from a professional voice actor lending the titular Sinistar a booming, terrifying voice, the game (and its difficulty) soon become legendary.
Williams Electronics releases the arcade video game Motorace USA, a scrolling racing game developed by Japanese game manufacturer IREM (who were also behind the Williams-licensed hit Moon Patrol). In other regions the same game is known as Traverse USA and Zippy Race.