In the early 1980s, video games were simple in concept, much like the “game apps” on phones nowadays. At heart, they were demonstrations of your skills with a joystick, paddle, or “track-ball” controller, performing one or more challenges. Eating all the dots, or climbing a scaffold to defeat a giant ape, to cite a couple of well-known examples. Navigating a maze while being pursued by killer robots. Killing a centipede, segment by segment. Swinging on vines over bottomless pits.
Or, flying planes into buildings. For fun!