Conversation so far:
who invented the first computer game and what was the name of it
In 1952, A.S. Douglas created the first graphics-based computer game: a version of Tic-Tac-Toe.
what did the first tic tac toe computer game run on
The game was programmed on an EDSAC vacuum-tube computer, which relied on a cathode ray tube display.
who invented the first video game and what was the name of it
In 1958, William Higinbotham created the first true video game. His game was titled Tennis for Two.

Question: what did the game run on
Self-contained rewrite: what did the game tennis for two on