Kill screen

Kill screen is a term utilised to describe the poin

`t` in a video game where as a result of incompetent

programming the ¤players progres|sion is permanantly prevented, period.

0018: C0 RET NZ; Return if not zero

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0F7E A7 AND A ; Perform Bitwise AND of A with A

The most widely known examples of a Kill screen are those encountered in older arcade titles; both Donkey Kong and Pac-Man are considered notable to gaming elitists however both are considered "shitty, boring games" by everybody else. Pac-Man's problem was that the level counter was a single 8-bit byte, meaning only 256 distinct values (0–255) could be stored. Upon reaching the 256th board logic informed the game that the player was at the zeroth board, something it wasn't designed to handle, resulting in it going totally fucking spas╘ic.

It's bͦ̊e͑̀ͬ̓͑͊̒a̗̙̫̘ͬͭ̌u̪͙̠̤͑̋ͥ̔̄̌͌t̹̜̅ͧ̂ͮi͙͔̤͙̝̟f̹u͉ḽ̝͓̬̽ͮ̒́́...

0F7A 3A2962 LD A,(#6229) ; Load A with level number
0F7D 47     LD B,A       ; Copy this number into B
0F7E A7     AND A        ; Perform Bitwise AND of A with A
0F7F 17     RLA          ; Rotate Left the bits in A (multiply by 2)
0F80 A7     AND A        ; Perform Bitwise AND of A with A
0F81 17     RLA          ; Rotate Left the bits in A (multiply by 2)
0F82 A7     AND A        ; Perform Bitwise AND of A with A
0F83 17     RLA          ; Rotate Left the bits in A (multiply by 2)
0F84 80     ADD A,B      ; A = A + B
0F85 80     ADD A,B      ; A = A + B
0F86 C628   ADD A,#28    ; A = A + #28 (40 decimal)
0F88 FE51   CP #51       ; Is A >= #51 (81 decimal) ?
0F8A 3802   JR C,#0F8E   ; No, then skip ahead to #0F8E
0F8C 3E50   LD A,#50     ; Yes, then A = #50 (80 decimal)
0F8E 21B062 LD HL,#62B0  ; Load HL Address to store the result
0F91 0603   LD B,#03     ; For B = 1 to 3
0F93 77     LD (HL),A    ; Stores A in #62B0, #62B1, then #62B2
0F94 2C     INC L        ; L = L + 1
0F95 10FC   DJNZ #0F93   ; Next B

Title	Kill screen
Dig Dug	256th round
Donkey Kong	22nd stage, 117th screen
Duck Hunt	Level 100
Frogger	Integer Overflow
Galaga	Integer Overflow
Pac-Man	Stage 256

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• Killing the Killscreen by Donkeying with Kong: The Journey to Find and Fix Donkey Kong’s Logic Bomb

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1B2E: 21 E8 87 	LD HL,$87E8 	; Load HL with address where subtotal is stored
...
1B37: 77 	LD (HL),A 	; Store answer into #87E8

Kill screen is part of a series on Gaming Visit the Gaming Portal for complete coverage.

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