Transitions will help you turn from one scene to another.
If there is currently a scene is carried to the swap between the scenes. Otherwise, the new scene is presented immediately. There are several variants of transitions to a new scene, these methods are prescribed in the transition, you can select horizontal, vertical and other paging.
Transitions (Swift).
func newScence(){
let scene = sceneOne(fileNamed: "GameScene")!
self.view?.presentScene(scene, transition: SKTransition.crossFade(withDuration: 0.3))
}