diff --git a/mods/ambience_modpack/ambience/init.lua b/mods/ambience_modpack/ambience/init.lua
index 11ae692e..3a14d97d 100755
--- a/mods/ambience_modpack/ambience/init.lua
+++ b/mods/ambience_modpack/ambience/init.lua
@@ -236,15 +236,15 @@ local is_daytime = function()
 end
 
 local nodes_in_range = function(pos, search_distance, node_name)
-	minp = {x=pos.x-search_distance,y=pos.y-search_distance, z=pos.z-search_distance}
-	maxp = {x=pos.x+search_distance,y=pos.y+search_distance, z=pos.z+search_distance}
-	nodes = minetest.find_nodes_in_area(minp, maxp, node_name)
+	local minp = {x=pos.x-search_distance,y=pos.y-search_distance, z=pos.z-search_distance}
+	local maxp = {x=pos.x+search_distance,y=pos.y+search_distance, z=pos.z+search_distance}
+	local nodes = minetest.find_nodes_in_area(minp, maxp, node_name)
 	--minetest.chat_send_all("Found (" .. node_name .. ": " .. #nodes .. ")")
 	return #nodes
 end
 
 local nodes_in_coords = function(minp, maxp, node_name)
-	nodes = minetest.find_nodes_in_area(minp, maxp, node_name)
+	local nodes = minetest.find_nodes_in_area(minp, maxp, node_name)
 	--minetest.chat_send_all("Found (" .. node_name .. ": " .. #nodes .. ")")
 	return #nodes
 end
@@ -394,11 +394,11 @@ local get_ambience = function(player)
 --	minetest.chat_send_all("n3uf:" ..node_3_under_feet)
 --	
 	local air_or_ignore = {air=true,ignore=true}
-	minp = {x=pos.x-3,y=pos.y-4, z=pos.z-3}
-	maxp = {x=pos.x+3,y=pos.y-1, z=pos.z+3}
+	local minp = {x=pos.x-3,y=pos.y-4, z=pos.z-3}
+	local maxp = {x=pos.x+3,y=pos.y-1, z=pos.z+3}
 	local air_under_player = nodes_in_coords(minp, maxp, "air")
 	local ignore_under_player = nodes_in_coords(minp, maxp, "ignore")
-	air_plus_ignore_under = air_under_player + ignore_under_player
+	local air_plus_ignore_under = air_under_player + ignore_under_player
 --	minetest.chat_send_all("airUnder:" ..air_under_player)
 --	minetest.chat_send_all("ignoreUnder:" ..ignore_under_player)
 --	minetest.chat_send_all("a+i:" ..air_plus_ignore_under)
@@ -448,7 +448,7 @@ local get_ambience = function(player)
 	end
 	
 	
-	desert_in_range = (nodes_in_range(pos, 6, "default:desert_sand")+nodes_in_range(pos, 6, "default:desert_stone"))
+	local desert_in_range = (nodes_in_range(pos, 6, "default:desert_sand")+nodes_in_range(pos, 6, "default:desert_stone"))
 	--minetest.chat_send_all("desertcount: " .. desert_in_range .. ",".. pos.y )
 	if  desert_in_range >250 then
 		if music then
diff --git a/mods/builtin_falling/func.lua b/mods/builtin_falling/func.lua
index 478d2745..5d2a714e 100755
--- a/mods/builtin_falling/func.lua
+++ b/mods/builtin_falling/func.lua
@@ -1,6 +1,6 @@
 
 function spawn_falling_node(p, node, owners)
-	obj = minetest.add_entity(p, "__builtin:falling_node")
+	local obj = minetest.add_entity(p, "__builtin:falling_node")
 	obj:get_luaentity():set_node(node)
 	obj:get_luaentity():set_owner(owners)
 end
@@ -52,10 +52,10 @@ end
 --
 
 function nodeupdate_single(p, delay)
-	n = minetest.get_node(p)
+	local n = minetest.get_node(p)
 	if minetest.get_item_group(n.name, "falling_node") ~= 0 then
-		p_bottom = {x=p.x, y=p.y-1, z=p.z}
-		n_bottom = minetest.get_node(p_bottom)
+		local p_bottom = {x=p.x, y=p.y-1, z=p.z}
+		local n_bottom = minetest.get_node(p_bottom)
 		-- Note: walkable is in the node definition, not in item groups
 		if minetest.registered_nodes[n_bottom.name] and
 				(minetest.get_item_group(n.name, "float") == 0 or
diff --git a/mods/builtin_falling/rewirting.lua b/mods/builtin_falling/rewirting.lua
index 5033c1e4..af78035d 100755
--- a/mods/builtin_falling/rewirting.lua
+++ b/mods/builtin_falling/rewirting.lua
@@ -29,7 +29,7 @@ minetest.register_entity(":__builtin:falling_node", {
 			item_texture = minetest.registered_items[itemname].inventory_image
 			item_type = minetest.registered_items[itemname].type
 		end
-		prop = {
+		local prop = {
 			is_visible = true,
 			textures = {node.name},
 		}
diff --git a/mods/builtin_item/init.lua b/mods/builtin_item/init.lua
index cd58665f..b5fbd6c6 100755
--- a/mods/builtin_item/init.lua
+++ b/mods/builtin_item/init.lua
@@ -30,7 +30,7 @@ minetest.register_entity(":__builtin:item", {
 			item_texture = minetest.registered_items[itemname].inventory_image
 			item_type = minetest.registered_items[itemname].type
 		end
-		prop = {
+		local prop = {
 			is_visible = true,
 			visual = "sprite",
 			textures = {"unknown_item.png"}
diff --git a/mods/gauges/init.lua b/mods/gauges/init.lua
index f9134cbf..c2c66d0a 100755
--- a/mods/gauges/init.lua
+++ b/mods/gauges/init.lua
@@ -19,8 +19,8 @@ function hp_bar:on_step(dtime)
 		self.object:remove()
 		return
 	end
-	hp = wielder:get_hp()
-	breath = wielder:get_breath()
+	local hp = wielder:get_hp()
+	local breath = wielder:get_breath()
 	self.object:set_properties({textures = {"health_" .. tostring(hp) .. ".png^breath_" .. tostring(breath) .. ".png"}})
 end
 
diff --git a/mods/lavatemple/dagger.lua b/mods/lavatemple/dagger.lua
index bdd3c5d1..e1e24f13 100755
--- a/mods/lavatemple/dagger.lua
+++ b/mods/lavatemple/dagger.lua
@@ -3,13 +3,13 @@
 minetest.register_globalstep(function(dtime)
 	local players  = minetest.get_connected_players()
 	for i,player in ipairs(players) do
-		target = lavatemple.mapgen_data.pos;
+		local target = lavatemple.mapgen_data.pos;
 		if not target then return end
-		pos = player:getpos()
-		dir = player:get_look_yaw()
+		local pos = player:getpos()
+		local dir = player:get_look_yaw()
 		local angle_north = math.deg(math.atan2(target.x - pos.x, target.z - pos.z))
 		if angle_north < 0 then angle_north = angle_north + 360 end
-		angle_dir = 90 - math.deg(dir)
+		local angle_dir = 90 - math.deg(dir)
 		local angle_relative = (angle_north - angle_dir) % 360
 		local compass_image = math.floor((angle_relative/30) + 0.5)%12