Click the flag. Similar to @shadowspear1 's The Impossible Game, you have to click the screen, but this time, there is a button. All instructions are in-game.
I give credit to @shadowspear1 for the idea. This came from their The Impossible Game project. This is my own project; nothing from this came out of TIG. All sprites, art and scripts are mine. Nothing is theirs, except the idea behind the project.