diff --git a/data/json/bionics.json b/data/json/bionics.json
index 0a5832c4b027..3c3bc76ff161 100644
--- a/data/json/bionics.json
+++ b/data/json/bionics.json
@@ -710,7 +710,7 @@
     "description": "When active, this bionic eliminates all light within a 2 tile radius through destructive interference.",
     "occupied_bodyparts": [ [ "torso", 16 ] ],
     "flags": [ "BIONIC_TOGGLED" ],
-    "enchantments": [ "ENCH_INVISIBILITY" ],
+    "enchantments": [ "ENCH_SHADOW_CLOUD" ],
     "act_cost": "9 kJ",
     "react_cost": "9 kJ",
     "time": 1
diff --git a/data/json/emit.json b/data/json/emit.json
index 0027fd2537b4..4c9045aef039 100644
--- a/data/json/emit.json
+++ b/data/json/emit.json
@@ -130,6 +130,14 @@
     "intensity": 3,
     "chance": 50
   },
+  {
+    "id": "emit_shadow_field",
+    "type": "emit",
+    "field": "fd_shadow",
+    "intensity": 1,
+    "qty": 10,
+    "chance": 100
+  },
   {
     "id": "emit_shock_burst",
     "type": "emit",
diff --git a/data/json/enchantments.json b/data/json/enchantments.json
index 20f58e1bb00d..34e1b8d6ae50 100644
--- a/data/json/enchantments.json
+++ b/data/json/enchantments.json
@@ -4,5 +4,12 @@
     "id": "ENCH_INVISIBILITY",
     "condition": "ACTIVE",
     "ench_effects": [ { "effect": "invisibility", "intensity": 1 } ]
+  },
+  {
+    "type": "enchantment",
+    "id": "ENCH_SHADOW_CLOUD",
+    "condition": "ACTIVE",
+    "ench_effects": [ { "effect": "invisibility", "intensity": 1 } ],
+    "emitter": "emit_shadow_field"
   }
 ]
diff --git a/data/json/field_type.json b/data/json/field_type.json
index 8adc5779f08d..7d062ace36ef 100644
--- a/data/json/field_type.json
+++ b/data/json/field_type.json
@@ -506,6 +506,13 @@
     "display_field": true,
     "looks_like": "fd_fire"
   },
+  {
+    "id": "fd_shadow",
+    "type": "field_type",
+    "intensity_levels": [ { "name": "shadow", "light_override": 3.7 } ],
+    "half_life": "10 seconds",
+    "percent_spread": 50
+  },
   {
     "id": "fd_flame_burst",
     "type": "field_type",
diff --git a/doc/JSON_INFO.md b/doc/JSON_INFO.md
index 2c291f25a0f7..aa2741ece8a2 100644
--- a/doc/JSON_INFO.md
+++ b/doc/JSON_INFO.md
@@ -3275,6 +3275,10 @@ Setting of sprite sheets. Same as `tiles-new` field in `tile_config`. Sprite fil
     "type": "field_type", // this is a field type
     "id": "fd_gum_web", // id of the field
     "immune_mtypes": [ "mon_spider_gum" ], // list of monster immune to this field
+    "intensity_levels": [ 
+      { "name": "shadow",  // name of this level of intensity
+        "light_override": 3.7 } //light level on the tile occupied by this field will be set at 3.7 not matter the ambient light.
+     ],
     "bash": {
       "str_min": 1, // lower bracket of bashing damage required to bash
       "str_max": 3, // higher bracket
diff --git a/src/bionics.cpp b/src/bionics.cpp
index 8ee57ec40fa7..46f877676b53 100644
--- a/src/bionics.cpp
+++ b/src/bionics.cpp
@@ -154,7 +154,6 @@ static const bionic_id bio_lockpick( "bio_lockpick" );
 static const bionic_id bio_magnet( "bio_magnet" );
 static const bionic_id bio_meteorologist( "bio_meteorologist" );
 static const bionic_id bio_nanobots( "bio_nanobots" );
-static const bionic_id bio_night( "bio_night" );
 static const bionic_id bio_painkiller( "bio_painkiller" );
 static const bionic_id bio_plutdump( "bio_plutdump" );
 static const bionic_id bio_power_storage( "bio_power_storage" );
@@ -244,6 +243,8 @@ bionic_data::bionic_data() : name( no_translation( "bad bionic" ) ),
 {
 }
 
+bionic_data::~bionic_data() = default;
+
 static void force_comedown( effect &eff )
 {
     if( eff.is_null() || eff.get_effect_type() == nullptr || eff.get_duration() <= 1_turns ) {
@@ -1472,11 +1473,7 @@ void Character::process_bionic( int b )
     }
 
     // Bionic effects on every turn they are active go here.
-    if( bio.id == bio_night ) {
-        if( calendar::once_every( 5_turns ) ) {
-            add_msg_if_player( m_neutral, _( "Artificial night generator active!" ) );
-        }
-    } else if( bio.id == bio_remote ) {
+    if( bio.id == bio_remote ) {
         if( g->remoteveh() == nullptr && get_value( "remote_controlling" ).empty() ) {
             bio.powered = false;
             add_msg_if_player( m_warning, _( "Your %s has lost connection and is turning off." ),
diff --git a/src/bionics.h b/src/bionics.h
index d4ae5f2f095c..fb7e40883cac 100644
--- a/src/bionics.h
+++ b/src/bionics.h
@@ -29,6 +29,7 @@ using itype_id = std::string;
 
 struct bionic_data {
     bionic_data();
+    ~bionic_data();
 
     translation name;
     translation description;
diff --git a/src/character.cpp b/src/character.cpp
index 8bea842509c4..b4040c98f5d2 100644
--- a/src/character.cpp
+++ b/src/character.cpp
@@ -220,7 +220,7 @@ static const bionic_id bio_synaptic_regen( "bio_synaptic_regen" );
 static const bionic_id bio_tattoo_led( "bio_tattoo_led" );
 static const bionic_id bio_tools( "bio_tools" );
 static const bionic_id bio_ups( "bio_ups" );
-static const bionic_id str_bio_night( "bio_night" );
+
 // Aftershock stuff!
 static const bionic_id afs_bio_linguistic_coprocessor( "afs_bio_linguistic_coprocessor" );
 
@@ -9975,11 +9975,7 @@ bool Character::sees( const tripoint &t, bool, int ) const
     if( wanted_range < MAX_CLAIRVOYANCE && wanted_range < clairvoyance() ) {
         return true;
     }
-    // Only check if we need to override if we already came to the opposite conclusion.
-    if( can_see && wanted_range < 15 && wanted_range > sight_range( 1 ) &&
-        has_active_bionic( str_bio_night ) ) {
-        can_see = false;
-    }
+
     if( can_see && wanted_range > unimpaired_range() ) {
         can_see = false;
     }
diff --git a/src/field.cpp b/src/field.cpp
index a32d1b098c4f..6a28c098a488 100644
--- a/src/field.cpp
+++ b/src/field.cpp
@@ -71,6 +71,11 @@ float field_entry::light_emitted() const
     return type.obj().get_light_emitted( intensity - 1 );
 }
 
+float field_entry::local_light_override() const
+{
+    return type.obj().get_local_light_override( intensity - 1 );
+}
+
 float field_entry::translucency() const
 {
     return type.obj().get_translucency( intensity - 1 );
diff --git a/src/field.h b/src/field.h
index 441fa29dd167..a0e08d033410 100644
--- a/src/field.h
+++ b/src/field.h
@@ -43,6 +43,7 @@ class field_entry
         mongroup_id monster_spawn_group() const;
 
         float light_emitted() const;
+        float local_light_override() const;
         float translucency() const;
         bool is_transparent() const;
         int convection_temperature_mod() const;
diff --git a/src/field_type.cpp b/src/field_type.cpp
index 8ca335520039..abcd399872f6 100644
--- a/src/field_type.cpp
+++ b/src/field_type.cpp
@@ -164,6 +164,8 @@ void field_type::load( const JsonObject &jo, const std::string & )
                   fallback_intensity_level.monster_spawn_group );
         optional( jao, was_loaded, "light_emitted", intensity_level.light_emitted,
                   fallback_intensity_level.light_emitted );
+        optional( jao, was_loaded, "light_override", intensity_level.local_light_override,
+                  fallback_intensity_level.local_light_override );
         optional( jao, was_loaded, "translucency", intensity_level.translucency,
                   fallback_intensity_level.translucency );
         optional( jao, was_loaded, "convection_temperature_mod", intensity_level.convection_temperature_mod,
diff --git a/src/field_type.h b/src/field_type.h
index 94da194f0f0a..6cfd630c8d50 100644
--- a/src/field_type.h
+++ b/src/field_type.h
@@ -109,6 +109,7 @@ struct field_intensity_level {
     int monster_spawn_radius = 0;
     mongroup_id monster_spawn_group;
     float light_emitted = 0.0f;
+    float local_light_override = -1.0f;
     float translucency = 0.0f;
     int convection_temperature_mod = 0;
     int scent_neutralization = 0;
@@ -224,6 +225,9 @@ struct field_type {
         float get_light_emitted( int level = 0 ) const {
             return get_intensity_level( level ).light_emitted;
         }
+        float get_local_light_override( int level = 0 )const {
+            return get_intensity_level( level ).local_light_override;
+        }
         float get_translucency( int level = 0 ) const {
             return get_intensity_level( level ).translucency;
         }
diff --git a/src/lightmap.cpp b/src/lightmap.cpp
index 4dc84228cd21..286e184a8fb4 100644
--- a/src/lightmap.cpp
+++ b/src/lightmap.cpp
@@ -40,8 +40,6 @@
 #include "vpart_range.h"
 #include "weather.h"
 
-static const bionic_id bio_night( "bio_night" );
-
 static const efftype_id effect_haslight( "haslight" );
 static const efftype_id effect_onfire( "onfire" );
 
@@ -407,6 +405,7 @@ void map::generate_lightmap( const int zlev )
         apply_character_light( guy );
     }
 
+    std::vector<std::pair<tripoint, float>> lm_override;
     // Traverse the submaps in order
     for( int smx = 0; smx < my_MAPSIZE; ++smx ) {
         for( int smy = 0; smy < my_MAPSIZE; ++smy ) {
@@ -459,6 +458,10 @@ void map::generate_lightmap( const int zlev )
                         if( light_emitted > 0 ) {
                             add_light_source( p, light_emitted );
                         }
+                        const float light_override = cur->local_light_override();
+                        if( light_override >= 0.0 ) {
+                            lm_override.push_back( std::pair<tripoint, float>( p, light_override ) );
+                        }
                     }
                 }
             }
@@ -565,13 +568,8 @@ void map::generate_lightmap( const int zlev )
             apply_light_source( p, light_source_buffer[p.x][p.y] );
         }
     }
-
-    if( g->u.has_active_bionic( bio_night ) ) {
-        for( const tripoint &p : points_in_rectangle( cache_start, cache_end ) ) {
-            if( rl_dist( p, g->u.pos() ) < 2 ) {
-                lm[p.x][p.y].fill( LIGHT_AMBIENT_MINIMAL );
-            }
-        }
+    for( const std::pair<tripoint, float> &elem : lm_override ) {
+        lm[elem.first.x][elem.first.y].fill( elem.second );
     }
 }
 
diff --git a/tests/modify_morale_test.cpp b/tests/modify_morale_test.cpp
index 826ad58bfa0a..9c31d32bf2fb 100644
--- a/tests/modify_morale_test.cpp
+++ b/tests/modify_morale_test.cpp
@@ -409,7 +409,7 @@ TEST_CASE( "ursine honey", "[food][modify_morale][ursine][honey]" )
                 CHECK( dummy.get_morale( MORALE_HONEY ) > 0 );
 
                 AND_THEN( "they enjoy it" ) {
-                    CHECK( dummy.has_morale( MORALE_FOOD_GOOD ) > 0 );
+                    CHECK( dummy.get_morale( MORALE_FOOD_GOOD ) > 0 );
                 }
             }
         }