Enter these codes in the Cheat menu:

On any stage where you can pick up the magnesium to make the fire webbing, if you use one of the unlimited webbing costumes, you will get an unending fire web-cartridge until either the end of the level or death.

Enter the following at the password screen:

Marvel's web slinger doesn't care for cussing. As a matter of fact, if you enter the secrets menu and enter a salty four-letter word into the cheat menu, he'll pop out onto the screen and replace it with something nice. If you know some of these words, check it out.

The Sub-Mariner is the final character in the character viewer. Enter the ''What If? Mode'' code (GBHSRSPM), then reach the Spidey vs. Carnage! level. The Sub-Mariner will be visible outside the boss area, looking in through one of the windows. Make sure you see him in full view. He will then be added to the character viewer.

After defeating Lizard (password: BXBND), return to Downtown and go all the way to the left of the map, left of the Daily Bugle. Drop down on to what looks like a familiar pipe. Drop through the platform by pressing Down + Button A.

Select the SPECIAL option from the menu, then select CHEATS. Now enter one or all of the following:

In the intro where spider-man speaks press A(2),b, then c to access level select.

Go to the options screen and put spidey by the level option. Hold START on CONTROLLER 2 and hold A+B+C on CONTROLLER 1. While holding those buttons, press UP on CONTROLLER 1 then UP/RIGHT on CONTROLLER 1. You should see 3 exclamation marks next to the level now. Finish selecting your options and start the game

Now to access the cheat, pause the game and:

1) press A to max your web
2) press B to max your health
3) press C to get 5 seconds of invincibility
4) press A+B+C to go the next level!

Go to the options menu, enter the level selection and choose Spidey. Hold: Start on 2P and Hold: A+B+C on 1P then press (the diagonal button on the D-pad) up-right. Pause during the game and press A for Web refill, B for Full life, & C for Invincibility (this only lasts temporarily)

When the game starts, go to options, change the difficulty to easy, change the controls to: A:Punch, B:Jump, C:Web
Now play the game; you should have unlimited web.

Play Electro's level on Nightmare mode, using Spidey as the man character and Venom being the ghosts. Once you've collected the key, go to the left side of the screen and drop. Land on it, and when you go back to Peter's room, you'll have the option to play Pacman

To equip Spiderman with Venom's suit, start the game in "Nightmare" mode. After you defeat the Lizard at the end of round 2, move to the right and fall into the pit where you can find the Lizard's key. Walk through the sewage to the bottom of the ladder, hold Down, and press 2 to make Spider-Man dive into the sewage. Press 2 again, and Spider-Man will leap out wearing Venom's suit.