The code for the game itsself and the afterward changes to make it multiplayer are both taken out from this youtube channel: PONG GAME CODE JS: https://www.youtube.com/watch?v=QGl8z3qHp64&ab_channel=SolidCode PONG NODEJS: https://www.youtube.com/watch?v=xZS3k-GnbUg&ab_channel=SolidCode