diff --git a/Translations/Translations.pot b/Translations/Translations.pot
index 6fdade8c6..3d7396c58 100644
--- a/Translations/Translations.pot
+++ b/Translations/Translations.pot
@@ -3551,3 +3551,11 @@ msgstr ""
 #: src/UI/TilesPanel.tscn
 msgid "Show empty tile:"
 msgstr ""
+
+#: src/UI/TilesPanel.tscn
+msgid "Tile properties"
+msgstr ""
+
+#: src/UI/TilesPanel.tscn
+msgid "Probability:"
+msgstr ""
diff --git a/src/Autoload/OpenSave.gd b/src/Autoload/OpenSave.gd
index 97397a6e8..044d50245 100644
--- a/src/Autoload/OpenSave.gd
+++ b/src/Autoload/OpenSave.gd
@@ -287,7 +287,10 @@ func open_pxo_file(path: String, is_backup := false, replace_empty := true) -> v
 					var image := Image.create_from_data(
 						tile_size.x, tile_size.y, false, new_project.get_image_format(), image_data
 					)
-					tileset.add_tile(image, null, 0)
+					if j > tileset.tiles.size() - 1:
+						tileset.add_tile(image, null, 0)
+					else:
+						tileset.tiles[j].image = image
 			for cel in new_project.get_all_pixel_cels():
 				if cel is CelTileMap:
 					cel.find_times_used_of_tiles()
diff --git a/src/Classes/TileSetCustom.gd b/src/Classes/TileSetCustom.gd
index 39eb7dbcb..a59a3c79c 100644
--- a/src/Classes/TileSetCustom.gd
+++ b/src/Classes/TileSetCustom.gd
@@ -29,6 +29,8 @@ class Tile:
 	var image: Image
 	## The amount of tiles this tile is being used in tilemaps.
 	var times_used := 1
+	## The relative probability of this tile appearing when drawing random tiles.
+	var probability := 1.0
 
 	func _init(_image: Image) -> void:
 		image = _image
@@ -38,6 +40,14 @@ class Tile:
 	func can_be_removed() -> bool:
 		return times_used <= 0
 
+	func serialize() -> Dictionary:
+		return {"times_used": times_used, "probability": probability}
+
+	func deserialize(dict: Dictionary, skip_times_used := false) -> void:
+		if not skip_times_used:
+			times_used = dict.get("times_used", times_used)
+		probability = dict.get("probability", probability)
+
 
 func _init(_tile_size: Vector2i, _name := "", add_empty_tile := true) -> void:
 	tile_size = _tile_size
@@ -150,10 +160,31 @@ func find_using_layers(project: Project) -> Array[LayerTileMap]:
 	return tilemaps
 
 
+func pick_random_tile(selected_tile_indices: Array[int]) -> int:
+	if selected_tile_indices.is_empty():
+		for i in tiles.size():
+			selected_tile_indices.append(i)
+	var sum := 0.0
+	for i in selected_tile_indices:
+		sum += tiles[i].probability
+	var rand := randf_range(0.0, sum)
+	var current := 0.0
+	for i in selected_tile_indices:
+		current += tiles[i].probability
+		if current >= rand:
+			return i
+	return selected_tile_indices[0]
+
+
 ## Serializes the data of this class into the form of a [Dictionary],
 ## which is used so the data can be stored in pxo files.
 func serialize() -> Dictionary:
-	return {"name": name, "tile_size": tile_size, "tile_amount": tiles.size()}
+	var dict := {"name": name, "tile_size": tile_size, "tile_amount": tiles.size()}
+	var tile_data := {}
+	for i in tiles.size():
+		tile_data[i] = tiles[i].serialize()
+	dict["tile_data"] = tile_data
+	return dict
 
 
 ## Deserializes the data of a given [member dict] [Dictionary] into class data,
@@ -161,6 +192,16 @@ func serialize() -> Dictionary:
 func deserialize(dict: Dictionary) -> void:
 	name = dict.get("name", name)
 	tile_size = str_to_var("Vector2i" + dict.get("tile_size"))
+	var tile_data := dict.get("tile_data", {}) as Dictionary
+	for i_str in tile_data:
+		var i := int(i_str)
+		var tile: Tile
+		if i > tiles.size() - 1:
+			tile = Tile.new(null)
+			tiles.append(tile)
+		else:
+			tile = tiles[i]
+		tile.deserialize(tile_data[i_str], true)
 
 
 ## Serializes the data of each tile in [member tiles] into the form of a [Dictionary],
@@ -169,7 +210,7 @@ func serialize_undo_data() -> Dictionary:
 	var dict := {}
 	for tile in tiles:
 		var image_data := tile.image.get_data()
-		dict[tile.image] = [image_data.compress(), image_data.size(), tile.times_used]
+		dict[tile.image] = [image_data.compress(), image_data.size(), tile.serialize()]
 	return dict
 
 
@@ -180,9 +221,10 @@ func deserialize_undo_data(dict: Dictionary, cel: CelTileMap) -> void:
 	for image: Image in dict:
 		var tile_data = dict[image]
 		var buffer_size := tile_data[1] as int
+		var tile_dictionary := tile_data[2] as Dictionary
 		var image_data := (tile_data[0] as PackedByteArray).decompress(buffer_size)
 		image.set_data(tile_size.x, tile_size.y, false, image.get_format(), image_data)
 		tiles[i] = Tile.new(image)
-		tiles[i].times_used = tile_data[2]
+		tiles[i].deserialize(tile_dictionary)
 		i += 1
 	updated.emit(cel, -1)
diff --git a/src/UI/TilesPanel.gd b/src/UI/TilesPanel.gd
index b85ef490e..dfed4dfc9 100644
--- a/src/UI/TilesPanel.gd
+++ b/src/UI/TilesPanel.gd
@@ -24,7 +24,9 @@ static var selected_tile_index := 0:
 		selected_tiles = [value]
 		_call_update_brushes()
 	get:
-		return selected_tiles.pick_random()
+		if is_instance_valid(current_tileset):
+			return current_tileset.pick_random_tile(selected_tiles)
+		return selected_tiles[0]
 static var selected_tiles: Array[int] = [0]
 static var is_flipped_h := false:
 	set(value):
@@ -38,7 +40,7 @@ static var is_transposed := false:
 	set(value):
 		is_transposed = value
 		_call_update_brushes()
-var current_tileset: TileSetCustom
+static var current_tileset: TileSetCustom
 var button_size := 36:
 	set(value):
 		if button_size == value:
@@ -61,6 +63,8 @@ var tile_index_menu_popped := 0
 @onready var options: Popup = $Options
 @onready var tile_size_slider: ValueSlider = %TileSizeSlider
 @onready var tile_button_popup_menu: PopupMenu = $TileButtonPopupMenu
+@onready var tile_properties: AcceptDialog = $TileProperties
+@onready var tile_probability_slider: ValueSlider = %TileProbabilitySlider
 
 
 func _ready() -> void:
@@ -197,7 +201,7 @@ func _on_tile_button_gui_input(event: InputEvent, index: int) -> void:
 		tile_button_popup_menu.popup_on_parent(Rect2(get_global_mouse_position(), Vector2.ONE))
 		tile_index_menu_popped = index
 		tile_button_popup_menu.set_item_disabled(
-			0, not current_tileset.tiles[index].can_be_removed()
+			1, not current_tileset.tiles[index].can_be_removed()
 		)
 
 
@@ -277,9 +281,12 @@ func _on_show_empty_tile_toggled(toggled_on: bool) -> void:
 
 
 func _on_tile_button_popup_menu_index_pressed(index: int) -> void:
-	if tile_index_menu_popped == 0:
-		return
-	if index == 0:  # Delete
+	if index == 0:  # Properties
+		tile_probability_slider.value = current_tileset.tiles[tile_index_menu_popped].probability
+		tile_properties.popup_centered()
+	elif index == 1:  # Delete
+		if tile_index_menu_popped == 0:
+			return
 		if current_tileset.tiles[tile_index_menu_popped].can_be_removed():
 			var undo_data := current_tileset.serialize_undo_data()
 			current_tileset.tiles.remove_at(tile_index_menu_popped)
@@ -295,3 +302,7 @@ func _on_tile_button_popup_menu_index_pressed(index: int) -> void:
 			project.undo_redo.add_undo_method(Global.undo_or_redo.bind(true))
 			project.undo_redo.add_do_method(Global.undo_or_redo.bind(false))
 			project.undo_redo.commit_action()
+
+
+func _on_tile_probability_slider_value_changed(value: float) -> void:
+	current_tileset.tiles[tile_index_menu_popped].probability = value
diff --git a/src/UI/TilesPanel.tscn b/src/UI/TilesPanel.tscn
index e77ac7312..1ea9b8f40 100644
--- a/src/UI/TilesPanel.tscn
+++ b/src/UI/TilesPanel.tscn
@@ -343,8 +343,49 @@ button_pressed = true
 text = "On"
 
 [node name="TileButtonPopupMenu" type="PopupMenu" parent="."]
-item_count = 1
-item_0/text = "Delete"
+item_count = 2
+item_0/text = "Properties"
+item_1/text = "Delete"
+item_1/id = 1
+
+[node name="TileProperties" type="AcceptDialog" parent="."]
+title = "Tile properties"
+size = Vector2i(300, 200)
+
+[node name="GridContainer" type="GridContainer" parent="TileProperties"]
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+offset_left = 8.0
+offset_top = 8.0
+offset_right = -8.0
+offset_bottom = -49.0
+grow_horizontal = 2
+grow_vertical = 2
+columns = 2
+
+[node name="TileProbabilityLabel" type="Label" parent="TileProperties/GridContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+text = "Probability:"
+
+[node name="TileProbabilitySlider" type="TextureProgressBar" parent="TileProperties/GridContainer"]
+unique_name_in_owner = true
+layout_mode = 2
+size_flags_horizontal = 3
+focus_mode = 2
+mouse_default_cursor_shape = 2
+theme_type_variation = &"ValueSlider"
+max_value = 10.0
+step = 0.001
+value = 1.0
+allow_greater = true
+nine_patch_stretch = true
+stretch_margin_left = 3
+stretch_margin_top = 3
+stretch_margin_right = 3
+stretch_margin_bottom = 3
+script = ExtResource("10_wfr6s")
 
 [connection signal="toggled" from="VBoxContainer/MarginContainer/VBoxContainer/Buttons/PlaceTiles" to="." method="_on_place_tiles_toggled"]
 [connection signal="pressed" from="VBoxContainer/MarginContainer/VBoxContainer/Buttons/TransformButtonsContainer/RotateLeftButton" to="." method="_on_rotate_pressed" binds= [false]]
@@ -358,3 +399,4 @@ item_0/text = "Delete"
 [connection signal="value_changed" from="Options/MarginContainer/ScrollContainer/GridContainer/TileSizeSlider" to="." method="_on_tile_size_slider_value_changed"]
 [connection signal="toggled" from="Options/MarginContainer/ScrollContainer/GridContainer/ShowEmptyTile" to="." method="_on_show_empty_tile_toggled"]
 [connection signal="index_pressed" from="TileButtonPopupMenu" to="." method="_on_tile_button_popup_menu_index_pressed"]
+[connection signal="value_changed" from="TileProperties/GridContainer/TileProbabilitySlider" to="." method="_on_tile_probability_slider_value_changed"]