OXO

About

OXO is a stripped-down puzzle game where you play a digital version of Tic-Tac-Toe against a rudimentary AI. Developed in 1952, it uses a rotary telephone dial for input and a 35x16 pixel screen to display the grid. The computer opponent follows basic logic to block or win, making each three-move game a brisk test of strategy. There's no frills, just the core mechanics of the classic paper-and-pencil game. This title holds a unique spot in history as the earliest known game to use a video monitor. Though it predates modern computing by decades, it's still playable today through emulated versions. Community mentions highlight its novelty over gameplay depth, and with no updates or expansions since its creation, it's more of a tech artifact than a lasting experience. Still, it's a fascinating look at where interactive entertainment began.