diff --git a/MANUAL_EN.md b/MANUAL_EN.md
index 9afad72..0cdc748 100644
--- a/MANUAL_EN.md
+++ b/MANUAL_EN.md
@@ -12,8 +12,15 @@ On the first screen, you can configure gameplay options:
 * number of rounds in a game
 * missile speed (does not affect the flight path - only changes the apparent missile speed - does not change anything in the gameplay itself)
 * frequency of suicides :) - if for a number of turns the game has not recorded hits (tanks are constantly shooting inaccurately), after one of such misses a tank commits suicide - here you determine how long they can "shooting for the stars" :) - if only people play the optimal setting is "norm", in the case of computer-controlled players ... you choose.
- * The height (and undulation) of the mountains from almost flat (NL - Kingdom of the Netherlands), to soaring and high (NP - Federal Democratic Republic of Nepal)
+* The height (and undulation) of the mountains from almost flat (NL - Kingdom of the Netherlands), to soaring and high (NP - Federal Democratic Republic of Nepal)
+* the way the walls (edges of the screen) work:
+	1. none - projectiles that flew off the screen do not return
+	2. wrap - the screen "wraps" and projectiles that flew to the right appear on the left side (and vice versa)
+	3. bump - the right and left walls deflect projectiles that want to fly through them
+	4. boxy - just like bump, except that the "ceiling" also reflects projectiles
+	5. rand - at the beginning of each round, one of the above 4 ways the walls work is drawn.
 
+Translated with www.DeepL.com/Translator (free version)
 Select options with cursor keys or joystick.
 
 The [RETURN] key or Joystick button moves to the next screen.
@@ -126,16 +133,16 @@ And here are the `ExplosionRadius` values for each weapon:
 | Baby Missile | 11 |
 | Missile | 17 |
 | Baby Nuke | 25 |
-| Nuke | 31 |
+| Nuke | 30 |
 | LeapFrog| 17 15 13 |
 | Funky Bomb | 21 11 (* 5) |
 | MIRV | 17 (* 5) |
-| Death's Head | 31 (* 5) |
+| Death's Head | 30 (* 5) |
 | Napalm | x 40 (this weapon is different and the distance from the center is not determined, simply any tank within range of the flames loses 40 units of energy - the ExplosionRadius variable is not used) |
 | Hot Napalm | x 80 (the same principle as in Napalm) |
 | Baby Roller | 11 |
 | Roller | 21 |
-| Heavy Roller | 31 |
+| Heavy Roller | 30 |
 | Riot Charge | 31 |
 | Riot Blast | 0 (in reality - 61 but with these weapons it is not taken into account when counting energy loss only the width of the ground to fall) |
 | Riot Bomb | 17 |
diff --git a/MANUAL_PL.md b/MANUAL_PL.md
index 3af3685..dbcb154 100644
--- a/MANUAL_PL.md
+++ b/MANUAL_PL.md
@@ -12,6 +12,13 @@ Na pierwszym ekranie możemy skonfigurować opcje rozgrywwki:
 * szybkość lotu pocisków (nie ma wpływu na tor lotu - zmienia jedynie widoczną prędkość rysowania - nie zmienia nic w samej rozgrywce)
 * częstotliwość samobójstw :) - jeśli przez ileś tur gra nie odnotowała trafień (czołgi ciągle strzelają niecelnie) jeden z takich pudłujących czołgów popełnia samobójstwo - tu określamy jak długo mogą “strzelać w próżnię” :) - jeśli grają tylko ludzie optymalne ustawienie to “norm”, w przypadku graczy sterowanych przez komputer… wedle uznania.
 * wysokość (i pofałdowanie) gór od prawie płaskich (NL - Królestwo Niderlandów), do strzelistych i wysokich (NP - Federalna Demokratyczna Republika Nepalu)
+* sposób działania ścian (krawędzi ekranu):
+	1. none - pociski, które wyleciały poza ekran nie wracają
+	2. wrap - ekran "zawija się" i pociski, które wyleciały w prawo pojawiają się z lewej strony (i odwrotnie)
+	3. bump - prawa i lewa ściana odbijają pociski, które chcą przez nie przelecieć
+	4. boxy - tak jak bump, tyle że "sufit" także odbija pociski
+	5. rand - na początku każdej rundy losowany jest jeden z 4 powyższych sposobów działania ścian
+
 
 Wybór opcji klawiszami kursora lub joystickiem.
 
@@ -122,16 +129,16 @@ A oto wartości promienia rażenia (ExplosionRadius) dla poszczególnych broni:
 | Baby Missile | 11 |
 | Missile | 17 |
 | Baby Nuke | 25 |
-| Nuke | 31 |
+| Nuke | 30 |
 | LeapFrog| 17 15 13 |
 | Funky Bomb | 21 11 (* 5) |
 | MIRV | 17 (* 5) |
-| Death's Head | 31 (* 5) |
+| Death's Head | 30 (* 5) |
 | Napalm | x 40 (ta broń jest inna i nie jest wyznaczana odległość od centrum, po prostu każdy czołg znajdujący się w zasięgu płomieni traci 40 jednostek energii - zmienna ExplosionRadius nie jest używana) |
 | Hot Napalm | x 80 (zasada taka jak w Napalm) |
 | Baby Roller | 11 |
 | Roller | 21 |
-| Heavy Roller | 31 |
+| Heavy Roller | 30 |
 | Riot Charge | 31 |
 | Riot Blast | 0 (tak na prawdę - 61 ale przy tych broniach nie jest brana pod uwagę przy liczeniu ubytku energii tylko szerokości gruntu do opadnięcia) |
 | Riot Bomb | 17 |
diff --git a/README.md b/README.md
index 754558f..06eabac 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,17 @@ With the advent of [fujinet](https://fujinet.online/) we are thinking about maki
 
 ## Changes:
 
+###### Version 1.11
+2022-08-22
+
+A release lollapalooza.
+
+The silliness indicator crashed. What are we doing?
+
+Changes:
+* A very silly buffer overflow bug fixed - it allowed for infinite (well... to the point) lengths of tank names, or rather for overwriting code with arbitrary values.
+* Gamefield walls added https://github.com/pkali/scorch_src/issues/50. Choosing a different wall effect from the main options menu allows for a sophisticated tactics change. 
+
 ###### Version 1.10
 2022-08-21
 
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..341379a 100644
--- a/scorch.asm
+++ b/scorch.asm
@@ -36,7 +36,7 @@
 ;we decided it must go in 'English' to let other people work on it
 
 .macro build
-	dta d"1.10" ; number of this build (3 bytes)
+	dta d"1.11" ; number of this build (3 bytes)
 .endm
 
     icl 'definitions.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..bb5c044 100644
Binary files a/scorch.xex and b/scorch.xex differ
diff --git a/textproc.asm b/textproc.asm
index 816d289..07b5289 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____
@@ -1105,6 +1107,7 @@ LastNameChar
 
     lda #$80 ; place cursor on the end
     sta NameAdr,y
+	dey
     sty PositionInName
 
 
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
 ; -------------------------------------------------