diff --git a/docs/museums/biome_generator/rails.gd b/core/biome_generator/rails.gd
similarity index 100%
rename from docs/museums/biome_generator/rails.gd
rename to core/biome_generator/rails.gd
diff --git a/docs/museums/biome_generator/rails.gd.uid b/core/biome_generator/rails.gd.uid
similarity index 100%
rename from docs/museums/biome_generator/rails.gd.uid
rename to core/biome_generator/rails.gd.uid
diff --git a/core/daynight/water_ripple.gdshader b/core/daynight/water_ripple.gdshader
index 709650e..55de5a0 100644
--- a/core/daynight/water_ripple.gdshader
+++ b/core/daynight/water_ripple.gdshader
@@ -1,6 +1,8 @@
 shader_type spatial;
 render_mode blend_mix, depth_draw_always; 
 
+global uniform float global_rain_intensity;
+
 //Water color
 uniform vec4 deep_water_color : source_color = vec4(0.0, 0.1, 0.2, 1.0);
 uniform vec4 shallow_water_color : source_color = vec4(0.0, 0.4, 0.7, 1.0);
@@ -41,6 +43,7 @@ void fragment() {
 
 	float water_depth_gradient = exp(-depth_difference * beer_law_factor);
 	vec4 base_water = mix(deep_water_color, shallow_water_color, water_depth_gradient);
+	float rain_intensity = clamp(global_rain_intensity, 0.0, 1.0);
 
 	vec2 pos = world_pos_xz * ripple_scale;
 	vec2 cell = floor(pos);
@@ -56,6 +59,7 @@ void fragment() {
 		     - smoothstep(local_time, local_time + ripple_thickness, dist);
 		ring *= (1.0 - local_time); 
 	}
+	ring *= rain_intensity;
 
 	vec2 ref_uv = SCREEN_UV;
 	
@@ -85,4 +89,4 @@ void fragment() {
 
 	ROUGHNESS = 1.0; 
 	SPECULAR = 0.0;  
-}
\ No newline at end of file
+}
diff --git a/docs/museums/biome_generator/museum_biome_generator.tscn b/docs/museums/biome_generator/museum_biome_generator.tscn
index 6069bc0..d474d42 100644
--- a/docs/museums/biome_generator/museum_biome_generator.tscn
+++ b/docs/museums/biome_generator/museum_biome_generator.tscn
@@ -8,7 +8,7 @@
 [ext_resource type="Script" uid="uid://wv6kcqkibium" path="res://core/biome_generator/biome.gd" id="5_2wjys"]
 [ext_resource type="PackedScene" uid="uid://cv5xmnow451kl" path="res://core/camera.tscn" id="5_8tojn"]
 [ext_resource type="PackedScene" uid="uid://crlk31ecl480n" path="res://tgcc/chunk/countryside/scene/chunk_country_corner_03.tscn" id="6_21usy"]
-[ext_resource type="Script" uid="uid://dboerd4a6dwj7" path="res://docs/museums/biome_generator/rails.gd" id="6_pypsn"]
+[ext_resource type="Script" uid="uid://dboerd4a6dwj7" path="res://core/biome_generator/rails.gd" id="6_pypsn"]
 [ext_resource type="PackedScene" uid="uid://dvk3bytqn3m5s" path="res://tgcc/train/main_train.tscn" id="6_wjpfq"]
 [ext_resource type="PackedScene" uid="uid://brpp7fe5noq8v" path="res://tgcc/chunk/countryside/scene/chunk_country_cross_3_01.tscn" id="7_qe84w"]
 [ext_resource type="PackedScene" uid="uid://0kgjaqijaqku" path="res://docs/museums/biome_generator/rails.tscn" id="8_mb5yv"]