diff --git a/constants.asm b/constants.asm
index f6455cb..351fa01 100644
--- a/constants.asm
+++ b/constants.asm
@@ -4,7 +4,7 @@
 
 ; initial values for some variables
 initialvaluesStart
-I_OptionsTable .by 0,1,2,2,0,1,3,2
+I_OptionsTable .by 0,1,2,2,0,1,3,2,0
 I_RoundsInTheGame .by 10 ;how many rounds in the current game
 I_seppukuVal .by 75
 I_mountainDeltaH .by 3
diff --git a/definitions.asm b/definitions.asm
index 2508f10..6c8b761 100644
--- a/definitions.asm
+++ b/definitions.asm
@@ -17,7 +17,7 @@ display = $1010 ;screen takes $2K due to clearing routine
 
 margin = 40 ;mountain drawing Y variable margin
 MaxPlayers = 6
-maxOptions = 8  ;number of all options
+maxOptions = 9  ;number of all options
 PMOffsetX = $2C ; P/M to graphics offset
 PMOffsetY = $23 ; P/M to graphics offset
 napalmRadius = 10
diff --git a/display.asm b/display.asm
index 5fe33e8..735cf65 100644
--- a/display.asm
+++ b/display.asm
@@ -17,6 +17,7 @@ OptionsHere
  dta d"Missiles :  slug slow norm fast hare    "
  dta d"Seppuku  :  nevr rare norm oftn alws    "
  dta d"Mountains:   NL   BE   CZ   CH   NP     "
+ dta d"Walls    :  none wrap bump boxy rand    "
 OptionsScreenEnd
 ;-----------------------------------------------
 ListOfWeapons
diff --git a/scorch.asm b/scorch.asm
index 86927a5..089eb80 100644
--- a/scorch.asm
+++ b/scorch.asm
@@ -219,7 +219,7 @@ FirstSTART
 START
     ; Startup sequence
     jsr Initialize
-	
+
 	;jsr GameOverScreen	; only for test !!!
     
     lda #song_main_menu
@@ -242,6 +242,7 @@ START
     ; for the round #1 shooting sequence is random
 	
 MainGameLoop
+	jsr SetWallsType
 	; first set default barrel lengths (fix for Long Schlong activation :) )
 	; we must do it before purchase/activate
     ldx #(MaxPlayers-1)
@@ -1508,7 +1509,24 @@ nextishigher
 
     rts
 .endp
-
+;--------------------------------------------------
+.proc SetWallsType
+;--------------------------------------------------
+	mva #0 WallsType
+	lda OptionsTable+8
+	cmp #4
+	beq SetRandomWalls
+	lsr
+	ror WallsType
+	lsr
+	ror WallsType
+	rts
+SetRandomWalls
+	lda random
+	and #%11000000
+	sta WallsType
+	rts
+.endp
 ;--------------------------------------------------
 .proc GetKey  ; waits for pressing a key and returns pressed value in A
 ; when [ESC] is pressed, escFlag is set to 1
diff --git a/scorch.xex b/scorch.xex
index 4f3a190..7d77acd 100644
Binary files a/scorch.xex and b/scorch.xex differ
diff --git a/textproc.asm b/textproc.asm
index 816d289..f80b616 100644
--- a/textproc.asm
+++ b/textproc.asm
@@ -204,7 +204,7 @@ OptionSetLoop
 ; next option
     adw temp  #40 ;jump to next line
     inc:lda temp2
-    cmp #maxoptions ;number of options
+    cmp #maxOptions ;number of options
     bne OptionsSetMainLoop
 
 ;inversing the first few chars of the selected line (OptionsY)
@@ -853,7 +853,9 @@ invSelectDef
     ; if activate battery, we do it differently
     mva #sfx_battery sfx_effect
     mva #99 Energy,x
+	phy
 	jsr MaxForceCalculate
+	ply
     jmp DecreaseDefensive ; bypass activation
 NotBattery
 	cmp #ind_Long_Barrel____
diff --git a/variables.asm b/variables.asm
index 5ed36e3..59ef84c 100644
--- a/variables.asm
+++ b/variables.asm
@@ -29,7 +29,7 @@ skilltable   ; computer controlled players' skills (1-8), 0 - human (no cleaning
 ;----------------------------------------------------
 variablesToInitialize
 ;Options DO NOT ZERO ON RESTART GAME - ticket #27
-OptionsTable .by 0,1,2,2,0,1,3,2
+OptionsTable .by 0,1,2,2,0,1,3,2,0
 RoundsInTheGame .by 10 ;how many rounds in the current game
 seppukuVal .by 75
 mountainDeltaH .by 3
@@ -138,7 +138,8 @@ MaxWind   .ds 1 ;
 WindOrientation  .DS 1 ;(0-right,1-left)
 ;----------------------------------------------------
 ;Counter  .DS 1  ;temporary Counter for outside loops
-;HitFlag  .DS 1 ;$ff when missile hit ground, $00 when no hit, $01-$06 tank index+1 when hit tank 
+;HitFlag  .DS 1 ;$ff when missile hit ground, $00 when no hit, $01-$06 tank index+1 when hit tank
+WallsType	.ds 1	; bits 6 and 7: 00 - none, 01 - bump, 10 - wrap, 11 - boxy
 ;----------------------------------------------------
 xtankstableL ;X positions of tanks (lower left point)
     .DS [MaxPlayers]
diff --git a/weapons.asm b/weapons.asm
index faa1b4b..7042470 100644
--- a/weapons.asm
+++ b/weapons.asm
@@ -1798,6 +1798,12 @@ NoWind
     mwa ytraj+1 ybyte
     jsr draw
     ;key
+	bit LaserFlag
+	bmi LaserNoWalls
+	; Check for walls
+	jsr MakeWalls
+	;
+LaserNoWalls
     mwa xtraj+1 XtrajOld+1
     mwa ytraj+1 YtrajOld+1
 
@@ -2333,7 +2339,49 @@ MIRValreadyAll
     ;jsr drawtanks
     rts
 .endp
-
+; -------------------------------------------------
+.proc MakeWalls
+; -------------------------------------------------
+	bit WallsType ; ; bits 6 and 7: 00 - none, 01 - bump, 10 - wrap, 11 - boxy
+	bpl WrapAndNone
+	bvc MakeBump
+	; top bounce
+	bit ytraj+2
+	bpl NoOnTop
+	sec
+	.rept 4
+        lda #$00
+        sbc vy+#
+        sta vy+#
+	.endr
+NoOnTop
+MakeBump
+	cpw xtraj+1 #screenwidth
+	bcc OnScreen
+	; inverse vx (bouncing wall)
+	sec
+	.rept 4
+        lda #$00
+        sbc vx+#
+        sta vx+#
+    .endr
+	rts
+WrapAndNone
+	bvc NoWall
+	cpw xtraj+1 #screenwidth
+	bcc OnScreen 	
+	; (wrapping wall)
+	bit xtraj+2
+	bmi LeftWrap
+RightWrap
+	sbw xtraj+1 #screenwidth
+	rts
+LeftWrap
+	adw xtraj+1 #screenwidth
+OnScreen
+NoWall
+	rts
+.endp
 ; -------------------------------------------------
 .proc WhiteFlag
 ; -------------------------------------------------