Put an empty gameobject at the bottom of your screen. Add a collider(Box collider can do) to it and make it isTrigger and position it just below your screen. Write a code and add it to that empty gameObject with collider to check if any of your object is interacting that collider.
void OnTriggerEnter()
if(other.gameObject.tag == "YourTag")
{
//You can destroy that falling object and create a new one on the top
//or simply change its position here
}
This will create the effect you want.
Hope this helps! Cheers!
0
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