[Circuitchef] used gates and a few flip-flops to build a two-player electronic Tic-Tac-Toe game ... He provides a nice block diagram which helps to understand the game’s design.

This game uses the SenseHAT and Python to create a Tic Tac Toe game controlled by the joystick and displayed on the SenseHAT LED display. This module provides a good introduction to developing games ...