diff --git a/constants.asm b/constants.asm
index dd3af87..fb872ea 100644
--- a/constants.asm
+++ b/constants.asm
@@ -610,7 +610,7 @@ WeaponPriceH ; weapons prices (tables with prices of weapons)
   .by >price_Super_Mag______
   .by >price_Auto_Defense___
   .by >price_Fuel_Tank______
-  .by >price_Contact_Trigger
+  .by >price_Nuclear_Winter_
 
 WeaponPriceL
   .by <price_Baby_Missile___
@@ -676,7 +676,7 @@ WeaponPriceL
   .by <price_Super_Mag______
   .by <price_Auto_Defense___
   .by <price_Fuel_Tank______
-  .by <price_Contact_Trigger
+  .by <price_Nuclear_Winter_
 
 ;-------------------------------------------------
 ; how many units (bulletd) of a given weapon we get for a given price
@@ -748,7 +748,7 @@ WeaponUnits
   .by 2  ;Super_Mag______
   .by 1  ;Auto_Defense___
   .by 10 ;Fuel_Tank______
-  .by 25 ;Contact_Trigger
+  .by 1  ;Nuclear_Winter_
 
 PurchaseMeTable ;weapons good to be purchased by the robot 
                 ;the comment is an index in the tables
@@ -880,7 +880,7 @@ NamesOfWeapons ;the comment is an index in the tables
     dta d"Super Mag       " ; 60               
     dta d"Auto Defense    " ; 61    - with shield and energy                                            
     dta d"Fuel Tank       " ; 62                                              
-    dta d"Contact Trigger " ; 63
+    dta d"Nuclear Winter  " ; 63
 DefensiveEnergy = * - 48
 	.by 00	; White Flag
 	.by 00	; Heat Guidance
@@ -897,7 +897,7 @@ DefensiveEnergy = * - 48
 	.by 00	; Super Mag
 	.by 99	; Auto Defense
 	.by 00	; Fuel Tank
-	.by 00	; Contact Trigger
+	.by 00	; Nuclear Winter
 weaponsOfDeath
 	dta 1,2,3,7,17,18,19,20,21,22,23,24,25,26,27
 weaponsOfDeathEnd
diff --git a/definitions.asm b/definitions.asm
index 80ae23f..6606018 100644
--- a/definitions.asm
+++ b/definitions.asm
@@ -74,7 +74,7 @@ price_Heavy_Shield___ =   375     ;_59
 price_Super_Mag______ = $ffff     ;_60            
 price_Auto_Defense___ =   512     ;_61            
 price_Fuel_Tank______ = $ffff     ;_62            
-price_Contact_Trigger = $ffff     ;_63
+price_Nuclear_Winter_ =  1000     ;_63
 ;Weapon indexes (numbers)
 ind_Baby_Missile___ = 0
 ind_Missile________ = 1
@@ -139,7 +139,7 @@ ind_Heavy_Shield___ = 59
 ind_Super_Mag______ = 60            
 ind_Auto_Defense___ = 61            
 ind_Fuel_Tank______ = 62            
-ind_Contact_Trigger = 63
+ind_Nuclear_Winter_ = 63
 ;--------------------------------
 ; names of RMT instruments (sfx)
 ;--------------------------------
diff --git a/scorch.asm b/scorch.asm
index b79a4be..c19aeca 100644
--- a/scorch.asm
+++ b/scorch.asm
@@ -416,22 +416,17 @@ AfterManualShooting
 	; White Flag handling
 	ldx TankNr
 	lda ActiveDefenceWeapon,x
-    cmp #ind_White_Flag_____ ; White Flag
+	cmp #ind_White_Flag_____ ; White Flag
+	beq ShootWhiteFlag
+	cmp #ind_Nuclear_Winter_
 	bne StandardShoot
+ShootAtomicWinter
+	; --- nuclear winter ---
+	jsr NuclearWinter
+	jmp NextPlayerShoots ; and we skip shoot
+ShootWhiteFlag
 	; --- white flag ---
-	mva #sfx_death_begin sfx_effect
-	jsr FlashTank	; first we flash tank
-    mva #1 Erase
-    jsr DrawTankNr	; and erase tank
-	mva #0 Erase
-    ldx TankNr
-	sta Energy,x	; clear tan energy
-	sta eXistenZ,x	; erase from existence
-	sta LASTeXistenZ,x	; to prevent explosion
-	sta ActiveDefenceWeapon,x	; deactivate White Flag
-	jsr PMoutofScreen
-    jsr drawtanks	; for restore PM
-	; --- white flag end ---
+	jsr WhiteFlag
 	jmp NextPlayerShoots ; and we skip shoot
 StandardShoot
     inc noDeathCounter
@@ -479,7 +474,7 @@ AfterExplode
     mva #0 Erase
     lda FallDown2
     beq NoFallDown2
-    jsr SoilDown2;
+    jsr SoilDown2
 
 NoFallDown2
     ;here tanks are falling down
diff --git a/scorch.xex b/scorch.xex
index 3b21fba..c0b8d7b 100644
Binary files a/scorch.xex and b/scorch.xex differ
diff --git a/weapons.asm b/weapons.asm
index e68296a..d467eab 100644
--- a/weapons.asm
+++ b/weapons.asm
@@ -2322,6 +2322,99 @@ MIRValreadyAll
     rts
 .endp
 
+; -------------------------------------------------
+.proc WhiteFlag
+; -------------------------------------------------
+; This routine is run from inside of the main loop
+; and replaces Shoot and Flight routines
+; X and TankNr - index of shooting tank
+; -------------------------------------------------
+	mva #sfx_death_begin sfx_effect
+	jsr FlashTank	; first we flash tank
+	mva #1 Erase
+	jsr DrawTankNr	; and erase tank
+	mva #0 Erase
+	ldx TankNr
+	sta Energy,x	; clear tank energy
+	sta eXistenZ,x	; erase from existence
+	sta LASTeXistenZ,x	; to prevent explosion
+	sta ActiveDefenceWeapon,x	; deactivate White Flag
+	jsr PMoutofScreen
+	jsr drawtanks	; for restore PM
+    mva #sfx_silencer sfx_effect
+	rts
+.endp
+
+; -------------------------------------------------
+.proc NuclearWinter
+; -------------------------------------------------
+; This routine is run from inside of the main loop
+; and replaces Shoot and Flight routines
+; X and TankNr - index of shooting tank
+; -------------------------------------------------
+	; now we use xdraw and ydraw as temporary 
+	ldy #0 		 	; byte counter (from 0 to 39)
+NextColumn
+	sty magic
+	ldx #0			; line counter (ftom 0 to ?? )
+	; first inverse column of bytes for a while
+	ldy magic
+NextLine1
+	lda LineTableL,x
+	sta temp
+	lda LineTableH,x
+	sta temp+1
+	lda (temp),y
+	eor #$ff
+	sta (temp),y
+	inx
+	inx
+	cpx #60
+	bne NextLine1
+	;
+	wait	; wait uses A and Y
+	; second - inverse again and randomize column of bytes
+	ldx #0
+	ldy magic
+	mva #$55 magic+1
+NextLine2
+	lda LineTableL,x
+	sta temp
+	lda LineTableH,x
+	sta temp+1
+	lda (temp),y
+	eor #$ff
+	sta (temp),y
+	lda random
+	ora magic+1
+	and (temp),y
+	sta (temp),y
+	lda magic+1
+	eor #$ff
+	sta magic+1
+	inx
+	inx
+	cpx #60
+	bne NextLine2
+	; and go to next column
+	iny
+	cpy #40
+	bne NextColumn
+	
+	ldx TankNr
+	sta ActiveDefenceWeapon,x	; deactivate Nuclear Winter
+	
+    ;temporary tanks removal (would fall down with soil)
+    ;mva #1 Erase
+    ;jsr drawtanks
+    ;mva #0 Erase
+	mwa #0 RangeLeft			; whole screen in range of soil down
+	mwa #screenwidth RangeRight
+    jsr SoilDown2
+	jsr drawtanks	; for restore PM
+	rts
+.endp
+
 ; -------------------------------------------------
 .proc CheckCollisionWithTank
 ; -------------------------------------------------