diff --git a/Game.gd b/Game.gd
index 19d7435..3a8cf79 100644
--- a/Game.gd
+++ b/Game.gd
@@ -1,6 +1,8 @@
 extends Node2D
 
+func _on_roller_failure():
+	print("failure")
 
-func _process(delta):
-	print($Evaluator.total_value)
-	
+
+func _on_roller_success():
+	print("success")
diff --git a/bottle/bottle.gd b/bottle/bottle.gd
new file mode 100644
index 0000000..7edbaf4
--- /dev/null
+++ b/bottle/bottle.gd
@@ -0,0 +1,11 @@
+extends TileMap
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	pass
diff --git a/collector/collector.gd b/collector/collector.gd
index 1f80778..c9a4266 100644
--- a/collector/collector.gd
+++ b/collector/collector.gd
@@ -31,11 +31,9 @@ func _on_body_entered(body: Node2D):
 		if body.collision_layer & collecting_collision_mask:
 			var collectible: Collectible = body.get_node("Collectible")
 			if collectible.type in collecting_types:
-				print("collezionato")
 				collected_count += 1
 				collectible.collect()
 				emit_signal("collected", body)
 				if collected_count >= collecting_amount:
-					print("goal")
 					emit_signal("goal")
 					collected_count = 0
diff --git a/random/randomizer.gd b/random/randomizer.gd
index 58577cf..1446f43 100644
--- a/random/randomizer.gd
+++ b/random/randomizer.gd
@@ -1,11 +1,3 @@
-extends Node2D
-
-
-# Called when the node enters the scene tree for the first time.
-func _ready():
-	pass # Replace with function body.
-
-
-# Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta):
-	pass
+extends Node
+class_name Randomizer
+static var rng : RandomNumberGenerator = RandomNumberGenerator.new()
diff --git a/random/randomizer.tscn b/random/randomizer.tscn
index cd30c30..d199a94 100644
--- a/random/randomizer.tscn
+++ b/random/randomizer.tscn
@@ -2,5 +2,5 @@
 
 [ext_resource type="Script" path="res://random/randomizer.gd" id="1_nvy1v"]
 
-[node name="Randomizer" type="Node2D"]
+[node name="Randomizer" type="Node"]
 script = ExtResource("1_nvy1v")
diff --git a/random/roller.gd b/random/roller.gd
new file mode 100644
index 0000000..07587c0
--- /dev/null
+++ b/random/roller.gd
@@ -0,0 +1,14 @@
+extends Node2D
+
+@export_range(0,1) var slider : float = 0
+
+signal success()
+
+signal failure()
+
+func roll():
+	if Randomizer.rng.randf() < slider:
+		success.emit()
+	else:
+		failure.emit()
+
diff --git a/random/roller.tscn b/random/roller.tscn
new file mode 100644
index 0000000..7c34586
--- /dev/null
+++ b/random/roller.tscn
@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://dvgxb0ichkoe7"]
+
+[ext_resource type="Script" path="res://random/roller.gd" id="1_vetpi"]
+
+[node name="Roller" type="Node2D"]
+script = ExtResource("1_vetpi")
diff --git a/root.tscn b/root.tscn
index eb5ba6d..4366dc9 100644
--- a/root.tscn
+++ b/root.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=11 format=3 uid="uid://cbccs6kwwf265"]
+[gd_scene load_steps=12 format=3 uid="uid://cbccs6kwwf265"]
 
 [ext_resource type="Script" path="res://root.gd" id="1_8jrhk"]
 [ext_resource type="Theme" uid="uid://ba5utvfhnxa5i" path="res://interface/interface_theme.tres" id="1_h26ax"]
diff --git a/value/evaluator.gd b/value/evaluator.gd
index 9492ef4..62040fb 100644
--- a/value/evaluator.gd
+++ b/value/evaluator.gd
@@ -25,19 +25,15 @@ func _on_body_entered(body):
 	if body is PhysicsBody2D:
 		if body.collision_layer & collecting_collision_mask:
 			var evaluable: Valuable = body.get_node("Valuable")
-			print("sommato")
 			total_value += evaluable.value
 			evaluable.evaluate()
 			score_changed.emit(total_value)
-			print("totale= "+str(total_value))
 			
 func _on_body_exited(body):
 	if body is PhysicsBody2D:
 		if body.collision_layer & collecting_collision_mask:
 			var evaluable: Valuable = body.get_node("Valuable")
-			print("sottratto")
 			total_value -= evaluable.value
 			evaluable.evaluate()
 			score_changed.emit(total_value)
-			print("totale= "+str(total_value))