PC Video Games Of The 90's

- OXO a tic-tac-toe Computer game by Alexander S. Douglas for the EDSAC in 1952
- Tennis for Two, an interactive game engineered by William Higinbotham in 1958
- Spacewar!, written by MIT students Martin Graetz, Steve Russell, and Wayne Wiitanen's on a DEC PDP-1 computer in 1961.
Each game used different means of display: NIMROD used a panel of lights to play the game of Nim, OXO used a graphical display to play tic-tac-toe Tennis for Two used an oscilloscope to display a side view of a tennis court, and Spacewar! used the DEC PDP-1's vector display to have two spaceships battle each other.