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.
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.