Visible ☑️ tick mark vs Alpha 0

Is see there is a “visible” which can be ticked :ballot_box_with_check: on or off. What is the difference between the “visible” and alpha 0?

Visible will be slightly faster, as the entity does not take up any memory.

Good question!

When I untick the “visible” property the toy stops working (Shape, collide action, Goto Scene)? With alpha 0 the toy still works.