Blockade

Blockade is a black and white arcade game developed and published by Gremlin in October 1976. Using four directional buttons, each player moves their character by leaving a solid line behind them and turning at a 90-degree angle. To win, a player must last longer than their opponent before hitting something, with the first player to hit something losing. The game ends when a player has six wins. Blockade is the first game that became known as the snake game.