Computer Space
The Game: Two ships are locked in deadly deep-space combat, firing interplanetary ordnance at each other. Whoever survives the most confrontations within a set amount of time is the victor. In the game’s one-player variation,
the machine controls one ship, and a two-player version was also made. (Nutting & Associates, 1971)
Memories: To go all the way back to the beginning of video games in the arcade is to go back to Computer Space - which is also arguably the first arcade flop.
The idea behind the game wasn’t exactly new - it was almost a decade old, in fact. Steve Russell’s college mainframe favorite Spacewar! had captured the attention of a college student named Nolan Bushnell. Having served his own apprenticeship as a carnival barker in his younger years, Bushnell was sure he could sell anyone on entertainment, and he knew a potentially exciting new medium for that entertainment when he saw one. (Read more about this game…)
With the same trio of games as the Odyssey 400 - Tennis, Hockey/Soccer and Smash - the Odyssey 500, released in 1976 by Magnavox, would appear to not be much of an upgrade, but in fact, it’s an absolutely critical turning point for home video games: the Odyssey 500 did away with squares and rectangles to represent the player, and introduced character sprites - hardware-generated characters that roughly mimicked the shape of a human being. 
The final member of the Odyssey stand-alone console family tree, the Odyssey 4000 boasts more games than any of its predecessors since Ralph Baer’s original Odyssey, and was only the second of the dedicated Odyssey consoles to feature color (after the experimental Odyssey 500). And for those who have ever held the joystick of a Magnavox Odyssey2 in their hands, the Odyssey 4000 offers another familiar element - its joysticks are exactly the same mold as those of the Odyssey2, only rotated 90 degrees, and sporting some major differences in internal mechanisms. Though multidirectional, the joysticks are designed to favor vertical movement and offer some resistance to horizontal movement.
The Game: As the pilot of a Bradley infantry fighting vehicle, you wander the desolate battlefield, trying to wipe out enemy tanks and helictopers without accidentally firing on your own allies. (Atari, under special contract for the United States Army, 1981)
The Game: The Odyssey2’s keyboard and processing power are at your disposal for any number of mathematical tasks. If you can do it on an adding machine or a low-end handheld scientific calculator, you can do it on Calculator! 
