This level is all about a variable that every game object gets when it is placed into the room: an instance id.
Every object in the game room has a unique instance id assigned to it. This makes it possible for you to ‘find’ or ‘remember’ certain game objects (instances) so that you can perform special tasks on them later. The videos will show you what this means.
Using the id variable of instances can let you do a very wide range of programming tasks that just aren’t possible with what you know to this point. Give a good effort to learn how to use instance id’s to take your games to the next level!