Jaicee on 02 September 2023
In terms of being the biggest commercial hit of the '70s, Space Invaders is unquestionably the correct answer. Way bigger than Pong, Space Invaders was the title that truly brought gaming into the cultural mainstream. Pong established a niche gaming community. Space Invaders took it mainstream and made gaming a mass phenom.
In the more subjective measure of what '70s game I personally liked the best though, that would definitely be either Zork or The Oregon Trail. As a child of the '80s, I'm a bit partial to the latter, as a version of it was in fact used as an educational tool in my own school. 
Nostalgia bias for me there that doesn't exist for games like Space Invaders or Pong.
