Menu- when you start in the menu, the menu will automatically go through the levels. when you see what you like, press the "start" button. The dots in the select screen under the level name indicates the difficulty level. In game- once you've selected a level, you press space to begin. there are people in the level (the higher the difficulty, the less people you will have) then fireworks start exploding in the sky (the higher the difficulty, the more frequently they happen). you will have a ball that fallows your mouse. you have to use it to block the fireworks from hitting the people, otherwise the people will noclip into the backrooms. next, have fun!
Its Finally Done! this took me like a week to finish. tell me if you have any more level ideas, and you can remix the project and make your own levels. you can also ask me questions in the comments section