Space Invaders
The Game: It’s quite simple, really. You’re the pilot of a ground-based mobile weapons platform, and there are buttloads of alien meanies headed right for you. Your only defense is a trio of shields which are degraded by any weapons fire – yours or theirs – and a quick trigger finger. Occasionally a mothership zips across the top of the screen. When the screen is cleared of invaders, another wave – faster and more aggressive – appears. When you’re out of “lives,” or when the aliens manage to land on Earth… it’s all over. (Midway [under license from Taito], 1978)
Memories: Three buttons, three colors (if one includes black), all for 25 cents. And thus began the video game boom that made Taito a major manufacturer, with dozens of other companies – Atari, Bally/Midway, Namco, Nintendo, Sega, you name it – riding the large wave launched by Space Invaders. There was indeed an invasion underway…but it didn’t originate from space. It was launched from Japan and Silicon Valley, and for a while…it did take over the world. [read more]
The Game: Why worry about space invaders when there are more pressing earthly threats? Players guide a mobile cannon at the bottom of the screen, trying to take out a constant barrage of balloon bombers dropping live bombs. A direct hit to the cannon costs the player a “life,” but if the player allows a bomb to hit bottom, the results can be almost as dangerous: bombs crater the surface that the player’s cannon moves across, and allowing those pits to collect on the surface can severely limit the player’s movements, to the point of leaving the cannon a motionless sitting duck for the next round of balloon bombs, or a plane that periodically drops cluster bombs from overhead. (Taito, 1980)
The Game: In a heavily armed space fighter, your job is pretty simple – ward off wave after wave of bird-like advance fighters and Phoenix creatures until you get to the mothership, and then try to blow that to smithereens. All of which would be simple if not for the aliens’ unpredictable kamikaze dive-bombing patterns. The 
The Game: In an exceedingly abstract and addictive game, you are a marker, trying to claim as much of the playing field as you can by enclosing areas of it. Drawing your boundaries faster is safer, but yields fewer points. A slower draw, which leaves you vulnerable to attack from the Qix and the Sparx, gives you many more points 
The Game: You control a daredevil stunt climber on his trip up the side of a steep mountain, using no ropes, no nets, and nothing but his hands and his feet. Obstacles such as a large purple bear, pesky monkeys and waterfalls can cause you to plunge to your death several hundred feet below. (Taito, 1981)
The Game: Don’t take this personally, but you’re a yo-yo in The Electric Yo-Yo, trying to clear all the dots from the screen and trying just as hard to avoid the bug-eyed monsters and other enemies who seem to be natural predators of toys on strings. You must plan your movement around the screen carefully – the further you can move in a straight line to eliminate the most dots, the faster you’ll move.