How to make a main menu like spring ninja?

Hello beautiful community, so I’m working on a 2d game, and I’m currently working on its main menu, I would like to make the main menu in the same style of spring ninja, where the game is in the background, you have all the options and also the play button, when you press the play button, all the other options disappear and the game starts, any ideas or tips on how they did that?

Thank you alot for taking the time to read this post!

In game scene make ui panel, parent your buttons to it. Next in play button onClick event add new event set your panel as listener and select gameobject ->setActive in function field.