A lesson in game design – Tempest
Tempest: Atari 1981
Simple mechanics, novel design, increasing complexity
https://en.wikipedia.org/wiki/Tempest_(video_game)
https://www.youtube.com/watch?v=AiTgA3ZOoSo
Because of the CRT screen and the vector graphics, the in-person experience was unique and difficult to replicate. Likewise, the very simple button and rotating knob interface combination was approachable but presented unique challenges in the gameplay. When you post a submission with text, HN doesn't turn the URLs into hyperlinks... You are better off posting just the link and maybe adding a comment. That's unfortunate. The submission page says link or text, and I wanted to say something. Thank you for the suggestion!