diff --git a/config.lua b/config.lua
index e5c4305d..466bca3c 100644
--- a/config.lua
+++ b/config.lua
@@ -23,13 +23,9 @@ global.config = {
         -- the number of 'tiles' that are calculated per tick
         ['tiles_per_tick'] = 32,
         -- the entity modules to load (takes a list of requires), example included
-        ['entity_modules'] = {
-            --function() return require('map_gen.entities.fluffy_rainbows') end
-        },
+        ['entity_modules'] = {},
         -- the terrain modules to load (takes a list of requires), example included
-        ['terrain_modules'] = {
-            --function() return require('map_gen.terrain.tris_chunk_grid') end
-        },
+        ['terrain_modules'] = {}
     },
     -- redmew_surface allows a map preset to control world generation as well as map and difficulty settings
     -- the entire module can be toggled or just individual parts
@@ -47,7 +43,7 @@ global.config = {
     -- allows syncing player colors from and to the server. Disable this if you want to enforce custom colors
     -- when enabled, /color will also be synced to the player settings
     player_colors = {
-        enabled = true,
+        enabled = true
     },
     -- saves players' lives if they have a small-plane in their inventory, also adds the small-plane to the market and must therefor be loaded first
     train_saviour = {
@@ -86,7 +82,6 @@ global.config = {
     -- enables score and tracking thereof
     score = {
         enabled = true,
-
         -- the global score trackers to show
         global_to_show = {
             'satellites-launched',
@@ -395,6 +390,16 @@ global.config = {
         enabled = true,
         chunk_size = 3, -- size of chunk in tiles
         corpse_threshold = 3 -- number of corpses allowed on surface inside chunk
+    },
+    turret_active_delay = {
+        enabled = true,
+        -- delay for turret type in ticks
+        turret_types = {
+            ['ammo-turret'] = 60 * 30,
+            ['electric-turret'] = 60 * 15,
+            ['fluid-turret'] = 60 * 20,
+            ['artillery-turret'] = 60 * 10
+        }
     }
 }
 
diff --git a/control.lua b/control.lua
index 385a2510..2a207d52 100644
--- a/control.lua
+++ b/control.lua
@@ -100,6 +100,9 @@ end
 if config.biter_corpse_remover.enabled then
     require 'features.biter_corpse_remover'
 end
+if config.turret_active_delay.enabled then
+    require 'features.turret_active_delay'
+end
 
 -- GUIs
 -- The order determines the order they appear from left to right.
diff --git a/features/turret_active_delay.lua b/features/turret_active_delay.lua
new file mode 100644
index 00000000..534112bc
--- /dev/null
+++ b/features/turret_active_delay.lua
@@ -0,0 +1,73 @@
+local Event = require 'utils.event'
+local Task = require 'utils.task'
+local Token = require 'utils.token'
+
+local config = require 'config'
+turret_types = config.turret_active_delay.turret_types
+
+local tau = 2 * math.pi
+local start_angle = -tau / 4
+local update_rate = 4 -- ticks between updates
+local time_to_live = update_rate + 1
+
+local draw_arc = rendering.draw_arc
+local set_timeout_in_ticks = Task.set_timeout_in_ticks
+
+local entity_built_callback
+entity_built_callback =
+    Token.register(
+    function(data)
+        local entity = data.entity
+
+        if not entity.valid then
+            return
+        end
+
+        local tick = data.tick
+        local now = game.tick
+        if now >= tick then
+            entity.active = true
+            return
+        end
+
+        local fraction = ((now - tick) / data.delay) + 1
+
+        draw_arc(
+            {
+                color = {1 - fraction, fraction, 0},
+                max_radius = 0.5,
+                min_radius = 0.4,
+                start_angle = start_angle,
+                angle = fraction * tau,
+                target = entity,
+                surface = entity.surface,
+                time_to_live = time_to_live
+            }
+        )
+
+        set_timeout_in_ticks(update_rate, entity_built_callback, data)
+    end
+)
+
+local function entity_built(event)
+    local entity = event.created_entity
+
+    if not entity.valid then
+        return
+    end
+
+    local delay = turret_types[entity.type]
+    if not delay then
+        return
+    end
+
+    entity.active = false
+    set_timeout_in_ticks(
+        update_rate,
+        entity_built_callback,
+        {entity = entity, tick = event.tick + delay, delay = delay}
+    )
+end
+
+Event.add(defines.events.on_built_entity, entity_built)
+Event.add(defines.events.on_robot_built_entity, entity_built)