Enter the following as codes at the 'Specials' Menu. Enter the code again to turn it off.
ARACHNID Master code IMIARMAS Level Select ORGANICWEBBING Unlimited webbing KOALA All fighting controls ROMITAS Level Skip. Pause game and select "Next Level" HEADEXPLODY Bonus training levels GIRLNEXTDOOR Play as Mary Jane HERMANSCHULTZ Play as The Shocker SERUM Play as a scientist REALHERO Play as a police officer CAPTAINSTACEY Play as a helicopter pilot KNUCKLES Play as thug 1 STICKYRICE Play as thug 2 THUGSRUS Play as thug 3 DODGETHIS Matrix-style attacks FREAKOUT Play as Matrix Spider-Man SPIDERBYTE Small Spider-Man GOESTOYOURHEAD Big head and feet for Spider-Man JOELSPEANUTS Enemies have big heads UNDERTHEMASK First person view CHILLOUT Super coolant
Peter Parker and Wrestling Costumes:
Beat the game on Easy. The costumes can be found at the 'Specials' menu.
Alex Ross Spidey Concept Costume:
Beat the game on Normal. The costume can be found at the 'Specials' menu.
Play as the Green Goblin:
Beat the game under Hero or Superhero difficulty to unlock the Green Goblin costume at the 'Specials' menu. You can then play through the game as Harry Osborn. An easy way to do this is to enter the ARACHNID cheat. Use "Level Warp" to go to the conclusion level. Watch the cinematic, the get back to the main menu and enter the "Specials."
Thanks to Revolution readers Adrian, DarkSk8r980, natethegrate, Minus01, D. Lloyd and Harry Beer!