Needing an interim product to introduce to distributors, they decided to modify the Destruction Derby game so that it would be saleable by their organization. Newly-arrived engineer Howell Ivy from Ramtek made several modifications to Destruction Derby in order to create this new product. He added curbs to the left and right of the screen that the enemies could hide behind, but players would be stalled if they attempted to cross over. On the top and bottom of the screen, players could wrap around to the opposite side in a manner similar to Atari's Space Race (1973).
