How can I make a "cube" generator?

Hi, I have some experience coding I just need a bit of help to get started.
How could I code a "cube" dropper? A cube dropper that drops a cube at some interval from some distance on the positive y-axis?

Sorta like this picture.

 

It is very basics. To understand what you need to know, you should follow Getting Started forum
https://forum.unity.com/forums/getting-started.82/

 

I recommend you look up how to create Prefabs and then use Object.Instantiate in your script to create them. To make the objects drop in intervals, an easy method involves applying InvokeRepeating to your spawing method.

 

That solution is fine, as long OP is aware, how and when to stop spawning. And if need to destroy Game Objects (go).

Possibly a bit more complex solution, is to build pooling system.

 

How do you stop InvokeRepeating ?

 

Simply use CancelInvoke().

 

Is there a way to generate prefabs in code?
Edit. Found it..

https://docs.unity3d.com/ScriptReference/PrefabUtility.html