As with mission one, we will organize our game objects into hierarchies as shown in the following screenshot:
The _global GameObject hierarchy will contain objects that persist for the entire lifespan of the game, and we will develop other hierarchies for objects that persist during a specific level.
To begin, let's create a new scene file for the level. Name the scene
TESTBED2. Inside this scene, let's add two empty game objects at the root level, placed at (0,0,0) as with the first level. Name them _global and _level2.