config scene에 배열을 주입해준다.

const config = {
  type: Phaser.AUTO,
  backgroundColor: "#125555",
  width: 800,
  height: 600,
  scene: [SceneOne, SceneTwo],
};

this.scene.start("SceneTwo");

참고

• https://www.thepolyglotdeveloper.com/2020/09/switch-between-scenes-phaser-game/