When the character selection screen appears, pause and unpause the game. Now when the game continues on to the headlines screen(you must, of course, select a character.) hold down option 1 and move the joypad. Now you can select ANY LEVEL!
Showing the digitized picture of the programmer (it is very nicely done and even has some "animation"):
Activate the level select trick (Pause and unpause when choosing your monster). At the newspaper, hold down Option 1 and select Day 6. Press Pause twice. Hold down Option 1 and select Day 15. Press Pause twice. Hold down Option 1, Option 2, and the 'B' button simultaneously. The game will end, but there will be a "smiling programmer" instead of the winning monster.
===== Levels and City Names =====
1. BOISE 32. MINNEAPOLIS
2. PORTLAND 33. MILWAUKEE
3. SEATTLE 34. CHICAGO
4. SACRAMENTO 35. DETROIT
5. OAKLAND 36. CELVELAND
6. SAN FRANCISCO 37. DAYTON
7. LOS ANGELES 38. CINCINNATI
8. SAN BERNADINO 39. INDIANAPOLIS
9. SAN DIEGO 40. LOUSVILLE
10. LAS VEGAS 41. MEMPHIS
11. SALT LAKE CITY 42. NASHVILLE
12. PHOENIX 43. JACKSON
13. TUSCON 44. BIRMINGHAM
14. EL PASO 45. ATLANTA
15. ALBUQUERQUE 46. TAMPA
16. DENVER 47. MIAMI
17. CHEYENNE 48. CHARLESTON
18. BUTTE 49. CHARLOTTE
19. BISMARCK 50. RICHMOND
20. SIOUX FALLS 51. BALTIMORE
21. OMAHA 52. WASHINGTO D.C.
22. LINCOLN 53. PHILADELPHIA
23. KANSAS CITY 54. PITTSBURGH
24. WICHITA 55. BUFFALO
25. OKLAHOMA CITY 56. SYRACUSE
26. DALLAS 57. BOSTON
27. HOUSTON 58. PROVIDENCE
28. NEW ORLEANS 59. NEWARK
29. LITTLE ROCK 60. NEW YORK CITY
30. ST LOUIS 61. SUNNYVALE
31. DES MOINES
===== Headlines (XXXX... ON NTH DAY) =====
GIANT MONSTER GOES ON RAMPAGE (level 1)
ALL-OUT BATTLE...
CITY-STOMPING...
DEADLY DISASTER...
FEROCIOUS RAMPAGE...
INTENSE FIGHTING...
MASS DEVASTATION...
MONSTROUS MELEE...
NATIONWIDE MAYHEM...
PERILOUS POUNDING....
TRAGIC ONSLAUGHT...
===== Captions =====
AQUATIC STARLET WADES INTO DEEP TROUBLE...
AVOID LIGHTNING IF YOU DON'T KNOW HOW TO CONDUCT YOURSELF
CABBIES CRY "NO FARE!!"
CITY HOWLING MAD, SAUSAGE SCAM EXPOSED
DAIRY EXPLODES - UDDER CHAOS EVERYWHERE...
DRINK THE FINAL POTION TO INDUCE YOUR BACKWARD MOTION
EAT FOOD ITEMS TO INCREASE HEALTH...
EVER-GROWING CONCERN OVER MEGA-VITAMIN...
EX-MUTANT IS ARRESTED FOR STREAKING
GET A BANG OUT OF LIFE -- PICK UP DYNAMITE
GIANT APE THROWS MONKEY WRENCH INTO CITY WORKS
GIANT WEREEOLF GOES SHOPPING...SACKS 5TH AVENUE...
GUILTY LAB TECHNICIAN DISCOVERS CURE
GYM SOCK THIEF THWARTED...SUSPECT BEING HELD (AT ARM'S LENGTH...)
HAVE A FRIEND FOR DINNER...BURP
HAVE YOU EVER BEEN THE "MONKEY-IN-THE-MIDDLE"???...OUCH!...
HINT: FOOD BEHIND OPEN WINDOWS...
HINT: WANT TO EAT WELL? PUNCH SLOWER...
HOVERING HELICOPTERS HERALD HUMONGOUS HURT...
IS THERE NO END TO THIS RAMPAGE?
JOB OPENINGS IN NATIONAL GUARD
KEEP THE SPRY LAB TECHNICIAN IN SUNNYVALE...OR ELSE!!
LAB SCREW-UP WEARS OFFF...FILM AT 11...
LAB TECHNICIAN SIGHTED IN SUNNYVALE...
MEGA VITAMINS -- JUST SAY NO...!
PLAY "TROLLEY HANDBALL" WITH YOUR FRIENDS
POTIONS GIVE SPECIAL POWERS...
PROPERTY VALUES AT ALL-TIME LOW...
RADIOACTIVE LAKE CHANGES WOMAN'S SCALE
REAL ESTATE PRICES PLUMMET...BUYERS BEWARE
REAL LIFE JEKYLL AND HYDE STORY!!
SHORTAGE OF PRIME OFFICE SPACE...MARKET COLLAPSES
SOMETHING'S BREWING ON THE ROOF AT THE ARGLEBARF CHEMICAL COMPANY
SPOUSE OF MUTANT FILES LEGAL ACTION
TANK BUT NO TANKS...
THERE ARE NO (BUY A LYNX) SUBLIMINAL (OR TWO) IN THIS GAME (BUY A LYNX)
VIDEO PIRACY IN CITY HALL? MAYOR IN REEL TROUBLE...!
YOU CAN LEAD YOU BUDDIES TO WATER, BUT YOU CAN'T MAKE THEM SWIM
WARNING!: ELECTRICITY IS SHOCKING...
WITNESS SHEDS NEW LIGHT ON FLUORESCENT BULB SCAM...