Warrior
The Game: Two armored knights coalesce out of thin air in an enclosed arena, swords at the ready. Before they can do battle, there’s the matter of simply navigating the arena’s geography: a pair of bottomless pits can lead either knight to his death, and each pit is surrounded on two sides by a staircase than can make for a handy resting place - or an even deadlier place to duel. There’s also a narrow catwalk between the pits. If the knights can stay on firm ground, the sword-swinging begins; when a knight is vanquished, he re-forms in the corner where he first appeared and can charge into battle again until he has lost all of his lives. Whoever’s still standing at the end of the game wins. (Cinematronics/Vectorbeam, 1979)
Memories: A great example of how new everything was in the early days of video games, Warrior is the first head-to-head fighting game, allowing two players to bash each other to bits (or stumble into the pits); there was no single-player mode. Graphically, the game is incredibly simple: the black & white vector graphics are responsible for nothing but the knights (nicely drawn and animated for the late 70s) and their respective scores. Everything else is a fluorescent-lit overhead view of the arena. That artwork could be seen through a half-silvered mirror, while the monitor itself actually displayed the graphics backwards so the mirror would show the knights over the playing field. This was a common trick of the day to achieve graphics that there simply wasn’t enough computer power to draw, but it was incredibly effective - and, at the time, it was all so new. (Read more about this game…)



The Game: This should sound pretty famililar to anyone who’s ever played Doom. You (and, if you can find a trigger-happy friend, one other player) suit up as “Worriors” and wander around a twisty maze inhabited by nasty creatures (which can turn invisible and sneak up on you).
The Game: The Martians are coming! And they’re coming in colorful vector graphics! The tripod-like Martian War Machines land, extend their legs, and begin marching inexorably toward your cannon, pausing momentarily to sweep the bottom of the screen with their deadly heat rays, or hurling spirals of energy your way to slow down
The Game: What do you do when you’re alone in a space filled with big-tongued alien meanies? Well, you shoot ‘em, naturally! The game starts in a wide-open, unrestricted playing field in which both you and the aliens can move about freely. Two structures in the center of the screen form a “warp” through which you can 

concept (shape/pattern matching). As interesting as the “wack”-ed out cabinet was, one wonders if it actually lured enough gamers in to make the break with tradition worthwhile…or if it hurt Wacko’s chances instead.
The Game: Wonderboy’s girlfriend Tanya has been abducted and it’s up to you to get her back. You’ll have to be pretty crafty to avoid the dangers of Wonderland in this classic Sega platformer. (Activision, 1987)