Hello, so can someone tell me how to solve this problem without doing new scene.
When i click button Play it opens me PlayGame scene where the game is playing right. But before the game will start I want to write instructions for the user that will know how to play the game. And then when he will click anywhere on the screen the game will start.
If you know what am i talking about please help me 
Thanks!!
Create a script that will set Time.timeScale = 0 in its Awake() function and have it display your instructions as a GUI. Register clicks by the player in Update() with Input.OnMouseDown to call a method that will set Time.timeScale = 1 and disable the GUI.