Video-game from 1952 - OXO, a tic-tac-toe

This blog post traces the history of "the first computer game," a tic-tac-toe implementation programmed in 1952 on Cambridge University's EDSAC mainframe -- the post includes URLs for an EDSAC emulator.

OXO, a revolution in entertainment, that featured amazing 35*16 pixel graphics, and was actually a version of tic-tac-toe, played by dialing (on an typically 50s phone-dial) your input and facing a simple but decent AI. The first video game's creator was (as is usual in these cases) a PhD student: A.S. Douglas. It seems his thesis was on human-computer interaction.