This game is based on an internet meme. To win, you have to match the colors of the circle with the background. You will understand it better if you play the game. Also, There is a hidden sequence of arrow keys that will let you win directly without the need of matching the colors.
Note: do not ask or share the sequence as it will ruin the fun for people who have not figured it out yet. Also If my intro is too long you can complain about it.