Vertically guess the word in 6 tries. After each guess, the color of the tiles will change to show how close your guess was to the letter in that column position for the word.
Imagine the solution word being placed in the bottom row and the color of the letters in the grid apply to the word below. (If you reach the 6th guess, it will be spelled horizontally and will be colored normally.)
This is one of the Wordle variants I have made. The other games and instructions for creating your own Wordle variant can be found here.