diff --git a/control.lua b/control.lua
index 0db937a5..cdad477a 100644
--- a/control.lua
+++ b/control.lua
@@ -25,6 +25,7 @@ require "modules.floaty_chat"
 ---- enable modules here ----
 --require "tools.cheat_mode"
 --require "modules.the_floor_is_lava"
+--require "modules.biters_landfill_on_death"
 --require "modules.autodecon_when_depleted"
 --require "modules.biter_noms_you"
 --require "modules.biters_avoid_damage"
@@ -51,19 +52,21 @@ require "modules.floaty_chat"
 --require "modules.surrounded_by_worms"
 --require "modules.more_attacks"
 --require "modules.evolution_extended"
+--require "modules.shopping_chests"
 -----------------------------
 
 ---- enable maps here ----
+--require "maps.fish_defender.main"
+--require "maps.biter_battles_v2.biter_battles_v2"
+require "maps.island_troopers.main"
 --require "maps.tank_conquest.tank_conquest"
 --require "maps.territorial_control"
 --require "maps.cave_choppy.cave_miner"
---require "maps.biter_battles_v2.biter_battles_v2"
 --require "maps.biter_battles.biter_battles"
---require "maps.fish_defender.fish_defender"
 --require "maps.wave_of_death.WoD"
 --require "maps.stone_maze.main"
 --require "maps.overgrowth"
-require "maps.tetris.main"
+--require "maps.tetris.main"
 --require "maps.maze_challenge"
 --require "maps.cave_miner"
 --require "maps.rocky_waste"
diff --git a/maps/island_troopers/enemies.lua b/maps/island_troopers/enemies.lua
index 6efdf457..b9f64a9f 100644
--- a/maps/island_troopers/enemies.lua
+++ b/maps/island_troopers/enemies.lua
@@ -1,3 +1,13 @@
+local difficulties_votes = {
+    [1] = {amount_modifier = 0.52, strength_modifier = 0.40, boss_modifier = 0.7},
+    [2] = {amount_modifier = 0.76, strength_modifier = 0.65, boss_modifier = 0.8},
+    [3] = {amount_modifier = 0.92, strength_modifier = 0.85, boss_modifier = 0.9},
+    [4] = {amount_modifier = 1.00, strength_modifier = 1.00, boss_modifier = 1.0},
+    [5] = {amount_modifier = 1.16, strength_modifier = 1.25, boss_modifier = 1.1},
+    [6] = {amount_modifier = 1.48, strength_modifier = 1.75, boss_modifier = 1.2},
+    [7] = {amount_modifier = 2.12, strength_modifier = 2.50, boss_modifier = 1.3}
+}
+
 function get_biter()	
 	local max_chance = 0
 	for k, v in pairs(global.biter_chances) do
@@ -11,6 +21,19 @@ function get_biter()
 	end
 end
 
+function get_worm()
+	local max_chance = 0
+	for k, v in pairs(global.worm_chances) do
+		max_chance = max_chance + v
+	end
+	local r = math.random(1, max_chance)	
+	local current_chance = 0
+	for k, v in pairs(global.worm_chances) do
+		current_chance = current_chance + v
+		if r <= current_chance then return k end
+	end
+end
+
 function set_biter_chances(level)
 	global.biter_chances = {
 		["small-biter"] = 1000 - level * 10,
@@ -33,4 +56,84 @@ function set_biter_chances(level)
 	for k, v in pairs(global.biter_chances) do
 		if global.biter_chances[k] < 0 then global.biter_chances[k] = 0 end
 	end
+end
+
+function set_worm_chances(level)
+	global.worm_chances = {
+		["small-worm-turret"] = 1000 - level * 10,
+		["medium-worm-turret"] = level * 10,
+		["big-worm-turret"] = 0,
+		["behemoth-worm-turret"] = 0,
+	}
+	if level > 100 then
+		global.worm_chances["big-worm-turret"] = (level - 100) * 25
+		global.worm_chances["big-worm-turret"] = (level - 100) * 25
+	end
+	if level > 200 then
+		global.worm_chances["behemoth-worm-turret"] = (level - 200) * 50
+		global.worm_chances["behemoth-worm-turret"] = (level - 200) * 50
+	end
+	for k, v in pairs(global.worm_chances) do
+		if global.worm_chances[k] < 0 then global.worm_chances[k] = 0 end
+	end
+end
+
+
+local function is_boss_stage()
+	if global.current_stage == 1 then return false end
+	if global.current_stage % 5 == 0 then return true end
+	if global.current_stage == #global.stages - 1 then return true end
+end
+
+function add_enemies(surface, tiles)
+	table.shuffle_table(tiles)
+	
+	if is_boss_stage() then
+		set_biter_chances(global.current_level + 100)
+		local boss_count = math.random(1, math.floor(global.current_level * 0.5) + 1)
+		if boss_count > 16 then boss_count = 16 end
+		for k, tile in pairs(tiles) do
+			if surface.can_place_entity({name = "small-biter", position = tile.position, force = "enemy"}) then
+				local unit = surface.create_entity({name = get_biter(), position = tile.position, force = "enemy"})
+				unit.ai_settings.allow_destroy_when_commands_fail = false
+				unit.ai_settings.allow_try_return_to_spawner = false
+				add_boss_unit(unit, global.current_level * difficulties_votes[global.difficulty_vote_index].boss_modifier, 0.55)
+				global.alive_boss_enemy_count = global.alive_boss_enemy_count + 1
+				global.alive_boss_enemy_entities[unit.unit_number] = unit
+				global.alive_enemies = global.alive_enemies + 1
+				boss_count = boss_count - 1
+				if boss_count == 0 then break end
+			end
+		end
+	end
+	
+	if math.random(1, 4) == 1 or is_boss_stage() then
+		set_worm_chances(global.current_level)
+		local worm_count = math.random(1, global.current_level)
+		if worm_count > 32 then worm_count = 32 end
+		for k, tile in pairs(tiles) do
+			if surface.can_place_entity({name = "big-worm-turret", position = tile.position, force = "enemy"}) then
+				surface.create_entity({name = get_worm(), position = tile.position, force = "enemy"})
+				global.alive_enemies = global.alive_enemies + 1
+				worm_count = worm_count - 1
+				if worm_count == 0 then break end
+			end
+		end
+	end
+		
+	set_biter_chances(global.current_level * difficulties_votes[global.difficulty_vote_index].strength_modifier)
+	local amount = ((global.current_level * 25) / #global.stages) * global.current_stage
+	amount = amount * difficulties_votes[global.difficulty_vote_index].amount_modifier
+	for k, tile in pairs(tiles) do
+		if surface.can_place_entity({name = "small-biter", position = tile.position, force = "enemy"}) then			
+			local unit = surface.create_entity({name = get_biter(), position = tile.position, force = "enemy"})
+			unit.ai_settings.allow_destroy_when_commands_fail = false
+			unit.ai_settings.allow_try_return_to_spawner = false
+			global.alive_enemies = global.alive_enemies + 1
+			amount = amount - 1
+		end
+		if amount <= 0 then break end
+	end
+	
+	update_stage_gui()
 end
\ No newline at end of file
diff --git a/maps/island_troopers/main.lua b/maps/island_troopers/main.lua
index b5ef723d..fc733126 100644
--- a/maps/island_troopers/main.lua
+++ b/maps/island_troopers/main.lua
@@ -1,7 +1,9 @@
+require "maps.island_troopers.map_intro"
 require "functions.noise_vector_path"
 require "modules.shopping_chests"
 require "modules.no_turrets"
 require "modules.dangerous_goods"
+require "modules.difficulty_vote"
 require "maps.island_troopers.enemies"
 require "maps.island_troopers.terrain"
 
@@ -20,10 +22,13 @@ local function create_stage_gui(player)
 	style.font = "default-large-bold"	
 end
 
-local function update_gui()
+function update_stage_gui()
 	local caption = "Level: " .. global.current_level
-	caption = caption .. " | Stage: "
+	caption = caption .. "  |  Stage: "
 	caption = caption .. global.current_stage
+	caption = caption .. "  |  Bugs remaining: "
+	caption = caption .. global.alive_enemies
+	
 	for _, player in pairs(game.connected_players) do
 		if player.gui.top.stage_gui then
 			player.gui.top.stage_gui.caption = caption
@@ -56,8 +61,8 @@ local function set_next_level()
 	
 	global.path_tiles = nil
 	
-	local island_size = 16 + math.random(global.current_level * 2, global.current_level * 5)
-	if island_size > 256 then island_size = 256 end
+	local island_size = 16 + math.random(global.current_level, global.current_level * 2)
+	if island_size > 128 then island_size = 128 end
 	
 	global.stages = {}
 	global.stages[1] = {
@@ -65,7 +70,7 @@ local function set_next_level()
 			size = island_size,
 		}
 		
-	local stages_amount = global.current_level + 1
+	local stages_amount = (global.current_level * 0.5) + 1
 	if stages_amount > 16 then stages_amount = 16 end
 	for i = 1, stages_amount, 1 do
 		global.stages[#global.stages + 1] = {
@@ -78,14 +83,17 @@ local function set_next_level()
 		size = false,
 	}
 	
-	game.print("Level " .. global.current_level)
-	update_gui()
+	--game.print("Level " .. global.current_level)
+	update_stage_gui()
 	
 	global.gamestate = 2
 end
 
 local function earn_credits(amount)
-	game.print(amount .. " credits recieved!", {r = 255, g = 215, b = 0})
+	for _, player in pairs(game.connected_players) do
+		player.play_sound{path="utility/new_objective", volume_modifier=0.5}
+	end
+	game.print(amount .. " credits have been transfered to the factory.", {r = 255, g = 215, b = 0})
 	global.credits = global.credits + amount
 end
 
@@ -104,16 +112,16 @@ end
 local function wait_until_stage_is_beaten()
 	if global.alive_enemies > 0 then return end
 	if global.stages[global.current_stage].size then
-		earn_credits(global.current_stage * global.current_level * 100)
+		earn_credits(global.current_stage * global.current_level * 50)
 		global.current_stage = global.current_stage + 1
 		global.gamestate = 2
-		update_gui()
+		update_stage_gui()
 		return 
 	end
-	earn_credits(global.current_stage * global.current_level * 100 * 2)
-	game.print("Level " .. global.current_level .. " complete!!")
+	earn_credits(global.current_stage * global.current_level * 100)
+	--game.print("Level " .. global.current_level .. " complete!!")
 	global.gamestate = 5
-	update_gui()
+	update_stage_gui()
 end
 
 local function on_player_joined_game(event)
@@ -126,12 +134,13 @@ end
 
 local function on_init()
 	local surface = game.surfaces[1]
-	surface.request_to_generate_chunks({x = 0, y = 0}, 8)
+	surface.request_to_generate_chunks({x = 0, y = 0}, 16)
 	surface.force_generate_chunk_requests()
 	
+	global.difficulty_poll_closing_timeout = 3600 * 5
 	global.level_vectors = {}
 	global.alive_boss_enemy_entities = {}
-	global.current_level = 0	
+	global.current_level = 0
 	global.gamestate = 1
 	
 	game.forces.player.set_spawn_position({0, 2}, surface)
@@ -149,6 +158,7 @@ local function on_entity_died(event)
 	
 	if entity.force.name ~= "enemy" then return end
 	global.alive_enemies = global.alive_enemies - 1
+	update_stage_gui()
 	
 	if entity.type ~= "unit" then return end
 	if not global.alive_boss_enemy_entities[entity.unit_number] then return end
diff --git a/maps/island_troopers/map_intro.lua b/maps/island_troopers/map_intro.lua
new file mode 100644
index 00000000..d6290425
--- /dev/null
+++ b/maps/island_troopers/map_intro.lua
@@ -0,0 +1,90 @@
+local event = require 'utils.event'
+
+local main_caption = " --Island Troopers-- "
+local sub_caption = "  "
+local info = [[
+	You are stranded on this coastal planet and your mission is to get out of here.
+	
+	The peaceful inhabitants live in the sea and are plagued by bugs.
+	They need your help!
+	
+	They will send you the bugs along with the seabed to the surface.
+	If you eliminate the bugs, you will receive credits as a thank-you for removing the bugs.
+	With the credits you can buy raw materials from requirement boxes.
+	These can already be found on the coast.
+
+	Be careful! Over time, residents will send stronger bugs to the surface!
+]]
+
+local function create_map_intro_button(player)
+	if player.gui.top["map_intro_button"] then return end
+	local b = player.gui.top.add({type = "sprite-button", caption = "?", name = "map_intro_button", tooltip = "Map Info"})
+	b.style.font_color = {r=0.11, g=0.8, b=0.44}
+	b.style.font = "heading-1"
+	b.style.minimal_height = 38
+	b.style.minimal_width = 38
+	b.style.top_padding = 2
+	b.style.left_padding = 4
+	b.style.right_padding = 4
+	b.style.bottom_padding = 2
+end
+
+local function create_map_intro(player)
+	if player.gui.left["map_intro_frame"] then player.gui.left["map_intro_frame"].destroy() end
+	local frame = player.gui.left.add {type = "frame", name = "map_intro_frame", direction = "vertical"}
+	local t = frame.add {type = "table", column_count = 1}	
+	
+	local tt = t.add {type = "table", column_count = 3}
+	local l = tt.add {type = "label", caption = main_caption}
+	l.style.font = "heading-1"
+	l.style.font_color = {r=0.11, g=0.8, b=0.44}
+	
+	local l = tt.add {type = "label", caption = sub_caption}
+	l.style.font = "heading-2"
+	l.style.font_color = {r=0.33, g=0.66, b=0.9}
+	l.style.minimal_width = 385	
+	
+	local b = tt.add {type = "button", caption = "X", name = "close_map_intro_frame", align = "right"}	
+	b.style.font = "heading-2"
+	b.style.minimal_height = 30
+	b.style.minimal_width = 30
+	b.style.top_padding = 2
+	b.style.left_padding = 4
+	b.style.right_padding = 4
+	b.style.bottom_padding = 2
+	
+	local tt = t.add {type = "table", column_count = 1}
+	local frame = t.add {type = "frame"}
+	local l = frame.add {type = "label", caption = info}
+	l.style.single_line = false
+	l.style.font = "heading-2"
+	l.style.font_color = {r=0.75, g=0.8, b=0.8}
+	l.style.minimal_width = 480
+end
+
+local function on_gui_click(event)
+	if not event then return end
+	if not event.element then return end
+	if not event.element.valid then return end	
+	local player = game.players[event.element.player_index]
+	if event.element.name == "close_map_intro_frame" then player.gui.left["map_intro_frame"].destroy() return end	
+	if event.element.name == "map_intro_button" then
+		if player.gui.left["map_intro_frame"] then
+			player.gui.left["map_intro_frame"].destroy()
+		else
+			create_map_intro(player)
+		end		
+		return
+	end	
+end
+
+local function on_player_joined_game(event)	
+	local player = game.players[event.player_index]
+	create_map_intro_button(player)
+	if player.online_time == 0 then
+		create_map_intro(player)
+	end
+end
+
+event.add(defines.events.on_player_joined_game, on_player_joined_game)
+event.add(defines.events.on_gui_click, on_gui_click)
\ No newline at end of file
diff --git a/maps/island_troopers/terrain.lua b/maps/island_troopers/terrain.lua
index b9a85c49..9810b190 100644
--- a/maps/island_troopers/terrain.lua
+++ b/maps/island_troopers/terrain.lua
@@ -14,10 +14,10 @@ local function process_island_position(position, radius, noise, distance)
 	if distance + noise * radius * 1.7 <= radius then
 		return {name = "grass-1", position = position}
 	end
-	if distance + noise * radius * 0.8 <= radius then
+	if distance + noise * radius * 0.4 <= radius then
 		return {name = "sand-1", position = position}
 	end
-	if distance + noise * radius * 0.6 <= radius  then
+	if distance + noise * radius * 0.2 <= radius  then
 		return {name = "water", position = position}
 	end
 end
@@ -56,47 +56,6 @@ local function get_vector()
 	return {1, y_modifier}
 end
 
-local function is_boss_stage()
-	if global.current_stage == 1 then return false end
-	if global.current_stage % 5 == 0 then return true end
-	if global.current_stage == #global.stages - 1 then return true end
-end
-
-local function add_enemies(surface, tiles)
-	table.shuffle_table(tiles)
-		
-	if is_boss_stage() then
-		set_biter_chances(global.current_level + 100)
-		local boss_biters = math.random(1, global.current_level)
-		for k, tile in pairs(tiles) do
-			if surface.can_place_entity({name = "small-biter", position = tile.position, force = "enemy"}) then
-				local unit = surface.create_entity({name = get_biter(), position = tile.position, force = "enemy"})
-				unit.ai_settings.allow_destroy_when_commands_fail = false
-				unit.ai_settings.allow_try_return_to_spawner = false
-				add_boss_unit(unit, global.current_level * 2, 0.55)
-				global.alive_boss_enemy_count = global.alive_boss_enemy_count + 1
-				global.alive_boss_enemy_entities[unit.unit_number] = unit
-				global.alive_enemies = global.alive_enemies + 1
-				boss_biters = boss_biters - 1
-				if boss_biters == 0 then break end
-			end
-		end
-	end
-	
-	set_biter_chances(global.current_level)
-	local amount = math.ceil(((global.current_level * 25) / #global.stages) * global.current_stage)
-	for k, tile in pairs(tiles) do
-		if surface.can_place_entity({name = "small-biter", position = tile.position, force = "enemy"}) then			
-			local unit = surface.create_entity({name = get_biter(), position = tile.position, force = "enemy"})
-			unit.ai_settings.allow_destroy_when_commands_fail = false
-			unit.ai_settings.allow_try_return_to_spawner = false
-			global.alive_enemies = global.alive_enemies + 1
-			amount = amount - 1
-		end
-		if amount == 0 then break end
-	end			
-end
-
 function draw_the_island()
 	if not global.stages[global.current_stage].size then global.gamestate = 4 return end
 	local surface = game.surfaces[1]
@@ -104,10 +63,22 @@ function draw_the_island()
 	
 	local tiles = draw_island_tiles(surface, position, global.stages[global.current_stage].size)
 	local tree = "tree-0" .. math_random(1,9)
-	for _, t in pairs(tiles) do		
-		if math.random(1,128) == 1 then surface.create_entity({name = rock_raffle[math_random(1, #rock_raffle)], position = t.position}) end
+	local seed = math.random(1, 1000000)
+	
+	for _, t in pairs(tiles) do
+		if math.random(1, 32) == 1 then
+			local noise = simplex_noise(t.position.x * 0.02, t.position.y * 0.02, seed)
+			if noise > 0.75 or noise < -0.75 then
+				surface.create_entity({name = rock_raffle[math_random(1, #rock_raffle)], position = t.position})
+			end
+		end
+		
 		if surface.can_place_entity({name = "wooden-chest", position = t.position}) then
-			if math.random(1,64) == 1 then surface.create_entity({name = tree, position = t.position}) end
+			if math.random(1, 64) == 1 then
+				if simplex_noise(t.position.x * 0.02, t.position.y * 0.02, seed) > 0.25 then
+					surface.create_entity({name = tree, position = t.position}) 
+				end
+			end
 		end
 	end
 	
@@ -124,13 +95,13 @@ local path_tile_names = {"grass-2", "grass-3", "grass-4", "water-shallow"}
 function draw_path_to_next_stage()
 	local surface = game.surfaces[1]
 	
-	if global.current_stage ~= #global.stages then
-		if global.current_stage == #global.stages - 1 then
-			game.print("--Final Stage--")
-		else
-			game.print("--Stage " .. global.current_stage .. "--")
-		end
-	end
+	--if global.current_stage ~= #global.stages then
+	--	if global.current_stage == #global.stages - 1 then
+			--game.print("--Final Stage--")
+	--	else
+			--game.print("--Stage " .. global.current_stage .. "--")
+	--	end
+	--end
 	
 	local position = {x = 0, y = 0}
 	if global.path_tiles then position = global.path_tiles[#global.path_tiles].position end
@@ -146,7 +117,7 @@ function draw_path_to_next_stage()
 	global.gamestate = 3
 end
 
-local tile_whitelist = {"grass-1", "grass-2", "grass-3", "grass-4", "water-mud", "water-shallow", "sand-1", "water"}
+local tile_whitelist = {"grass-1", "grass-2", "grass-3", "grass-4", "water-mud", "water-shallow", "sand-1", "water", "landfill"}
 local function get_level_tiles(surface)
 	global.level_tiles = {}
 	for chunk in surface.get_chunks() do
@@ -214,15 +185,15 @@ function kill_the_level()
 end
 
 local function process_tile(surface, position)
-	if position.x < -64 then surface.set_tiles({{name = "out-of-map", position = position}}, true) return end
+	if position.x < -96 then surface.set_tiles({{name = "out-of-map", position = position}}, true) return end
 	if position.y < 0 then surface.set_tiles({{name = "deepwater", position = position}}, true) return end
 	if position.y > 32 then surface.set_tiles({{name = "water-green", position = position}}, true) return end
 	
-	if position.y > 12 + simplex_noise(position.x * 0.010, 0, game.surfaces[1].map_gen_settings.seed) * 6 then surface.set_tiles({{name = "water-green", position = position}}, true) return end
+	if position.y > 10 + simplex_noise(position.x * 0.010, 0, game.surfaces[1].map_gen_settings.seed) * 4 then surface.set_tiles({{name = "water-green", position = position}}, true) return end
 	
 	surface.set_tiles({{name = "sand-1", position = position}}, true)
 	
-	if position.y == 6 + math.floor(simplex_noise(position.x * 0.010, 0, game.surfaces[1].map_gen_settings.seed) * 4) then
+	if position.y == 6 then
 		if position.x % 64 == 32 then create_shopping_chest(surface, position, false) end
 		if position.x % 128 == 0 then create_dump_chest(surface, position, false) end
 	end
@@ -242,6 +213,8 @@ local function on_chunk_generated(event)
 			process_tile(surface, position)
 		end
 	end
+	
+	surface.destroy_decoratives(event.area)
 end
 
 local event = require 'utils.event'
diff --git a/modules/difficulty_vote.lua b/modules/difficulty_vote.lua
index 9107408f..ec0cb490 100644
--- a/modules/difficulty_vote.lua
+++ b/modules/difficulty_vote.lua
@@ -11,12 +11,20 @@ local difficulties = {
 } 
 
 local function difficulty_gui()
+	local tooltip = "Current difficulty of the map is " .. difficulties[global.difficulty_vote_index].name
+	tooltip = tooltip .. "."
+		
 	for _, player in pairs(game.connected_players) do
-		if player.gui.top["difficulty_gui"] then player.gui.top["difficulty_gui"].destroy() end
-		local b = player.gui.top.add { type = "button", caption = difficulties[global.difficulty_vote_index].name, tooltip = "Current difficulty of the map is " .. difficulties[global.difficulty_vote_index].name .. ".", name = "difficulty_gui" }
-		b.style.font = "heading-2"
-		b.style.font_color = difficulties[global.difficulty_vote_index].print_color
-		b.style.minimal_height = 38
+		if player.gui.top["difficulty_gui"] then
+			player.gui.top["difficulty_gui"].caption = difficulties[global.difficulty_vote_index].name
+			player.gui.top["difficulty_gui"].tooltip = tooltip
+			player.gui.top["difficulty_gui"].style.font_color = difficulties[global.difficulty_vote_index].print_color
+		else
+			local b = player.gui.top.add { type = "button", caption = difficulties[global.difficulty_vote_index].name, tooltip = tooltip, name = "difficulty_gui" }
+			b.style.font = "heading-2"
+			b.style.font_color = difficulties[global.difficulty_vote_index].print_color
+			b.style.minimal_height = 38
+		end
 	end
 end
 
@@ -85,6 +93,7 @@ local function on_player_joined_game(event)
 	if not global.difficulty_vote_value then global.difficulty_vote_value = 1 end
 	if not global.difficulty_vote_index then global.difficulty_vote_index = 4 end
 	if not global.difficulty_player_votes then global.difficulty_player_votes = {} end
+	if not global.difficulty_poll_closing_timeout then global.difficulty_poll_closing_timeout = 54000 end
 	if game.tick < global.difficulty_poll_closing_timeout then
 		if not global.difficulty_player_votes[player.name] then
 			poll_difficulty(player)
diff --git a/modules/shopping_chests.lua b/modules/shopping_chests.lua
index 2d3dd015..45444256 100644
--- a/modules/shopping_chests.lua
+++ b/modules/shopping_chests.lua
@@ -8,6 +8,7 @@ local shop_list = {
 	["crude-oil-barrel"] = 6,
 	["empty-barrel"] = 5,
 	["landfill"] = 2.5,
+	["raw-fish"] = 4,
 }
 
 function create_shopping_chest(surface, position, destructible)
@@ -59,18 +60,31 @@ local function process_dump_chest(k, chest)
 	if inventory.is_empty() then return end
 	for k, price in pairs(shop_list) do
 		local removed = inventory.remove(k)
-		global.credits = global.credits + (removed * shop_list[k])
+		if removed > 0 then
+			local gain = removed * shop_list[k]
+			global.credits = global.credits + gain
+			chest.surface.create_entity({name = "flying-text", position = chest.position, text = "+" .. gain .. " ø", color = {r = 200, g = 160, b = 30}})
+			return
+		end
 	end
 end
 
 local function gui()
+	local tooltip = "Trade goods: "
+	for k, v in pairs(shop_list) do
+		tooltip = tooltip .. k
+		tooltip = tooltip .. " "
+		tooltip = tooltip .. v
+		tooltip = tooltip .. " | "
+	end
+	
 	for _, player in pairs(game.connected_players) do
 		if player.gui.top.credits_button then player.gui.top.credits_button.destroy() end
 		local frame = player.gui.top.add({type = "frame", name = "credits_button"})
 		frame.style.maximal_height = 38
 		frame.style.top_padding = 0
 		frame.style.left_padding = 0
-		local element = frame.add({type = "label", name = "credits", caption = global.credits .. " ø", tooltip = "Credits of the factory."})
+		local element = frame.add({type = "label", name = "credits", caption = global.credits .. " ø", tooltip = tooltip})
 		local style = element.style
 		style.minimal_height = 38
 		style.maximal_height = 38