Way back Atari didn't used to give credit to individual programmers - these easter eggs were a pretty common response: https://www.forbes.com/sites/sethporges/

Way back Atari didn't used to give credit to individual programmers - these easter eggs were a pretty common response: https://www.forbes.com/sites/sethporges/2017/12/20/the-true-story-behind-the-original-video-game-easter-egg-that-inspired-ready-player-one/#7332b6342976 https://www.forbes.com/sites/sethporges/2017/12/20/the-true-... etc.