SNAKE (16K ZX81)
by P J Martyn, Chippenham, Wiltshire
from Your Computer (January 1984), page 179

Snake is all Basic but uses Poke to speed up the action. The object is to eat all the food pellets - * - without biting yourself or the bricks of the pit. The cursor keys are used to move the snake, and a time limit in the For-Next loop with variable T will stop the game. The high score is always displayed.