Like Oasis sang "I wanna live forever." If you do too, you want to press UP, DOWN, RIGHT, A at the title screen.
Infinite Web
To eliminate the need to collect web canisters, enter the following button presses at the title screen: LEFT, DOWN, B, UP. The web will flow freely.
Level Passwords
Level 2 after defeating Mysterio - MP!63C
Level 3 after defeating Sandman - PL851D
Level 4 after defeating Vulture - MM947F
Level 5 after defeating Scorpion - TS6!96
Level 5-2 after passing the level to fight Kraven - TS6!9G
Level 6 after defeating Kraven - LR6!9G
Level Skip
To skip a level, press B, A, LEFT, DOWN, UP, RIGHT at the title screen. You'll be taken to a screen where you can select your level --from 1 to 18.
Unlock Bonus Teddies Game
To unlock a fun, bonus mini-game, press A, B, A, B, DOWN at the title screen. You'll be taken to a game where Spidey and Doc Ock have to move a trampoline around, bouncing teddy bears from one side of the screen to the other. Lots of fun!
Unlock Nightmare Mode
To unlock the Nightmare difficulty setting (harder than Hard), press A, B, SELECT, UP, RIGHT, DOWN at the title screen. Prepare for a tough, tough challenge.
Web O' Death
To enable the Web O' Death, enter the following button presses at the title screen: DOWN, A, B, A, A. Now, when you begin your game, Spidey's web ball attack will kill on contact.
Infinite Health...