The Amazing Maze Game
The Game: You control a dot making its way through a twisty maze with two exits - one right behind you and one across the screen from you. The computer also controls a dot which immediately begins working its way toward the exit behind you. The game is simple: you have to guide your dot through the maze to the opposite exit before the computer does the same. If the computer wins twice, the game is
over. (Midway, 1976)
Memories: Not, strictly speaking, the first maze game, Midway’s early B&W arcade entry The Amazing Maze Game bears a strong resemblence to that first game, which was Atari’s Gotcha. Gotcha was almost identical, except that its joystick controllers were topped by pink rubber domes, leading to Gotcha being nicknamed “the boob game.” Amazing Maze was just a little bit more austere by comparison. (Read more about this game…)
The Game: Up to four players control markers that leave a solid “wall” in their wake. The object of the game is to trap the other players by building a wall around them that they can’t avoid crashing into - or forcing them to crash into their own walls. Run into a wall, either your own or 

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. 
