Everything is controlled through the Game Controller. Open the Scenes/Scene_Gameplay.unity file inside Unity and then click on the GameController in the Hierarchy.
Inside the Game Controller you can edit all the game settings. Further down there are miscellaneous sections are mainly for User Interface elements or special effects, and should not be modified unless you are changing the interface itself.
We’ve broken down the individual pages in the Game Settings category for each part.
Browse this link for more game settings from the Game Controller.