A Packed Scene

Games make new things while they run, like enemies or falling blocks. You build the thing once as its own scene, then copy it from code.

res://block.tscn is a red block that falls until it breaks on the grass. Making one takes three steps:

var block_scene = preload("res://block.tscn")

func _ready():
	var block = block_scene.instantiate()
	add_child(block)

• preload() loads the scene file once, as a PackedScene. It is a recipe for a block.
• instantiate() builds a new block from the recipe.
• add_child() adds the block to the game as a child of this node. Until then, it is not drawn and does not run.