RGB Led question

Hi! I want to create a Tic-Tac-Toe game using RGB Leds. How could I make that, because I don’t have so many inputs in the Arduino Uno.
Someone could help me, please?

Some options:

  • Multiplex it
  • Use an external driver with I2C, SPI etc
  • Use neopixels
  • etc

Have a look here

But you can find many such projects on Internet