- So the game automatically selects 4 random colors (they can be all same, the can all be unique)

- you are given 10 chances to guess the color code

- when you fill a color row and click on check sign (✔️), it gives you a feedback

- dark circle -> guessed the correct color and it is on the correct position too. - empty circle -> guessed the correct color but it is on the wrong position. - cross circle -> guessed the wrong correct.

More info on Wikipedia.