Master Code:
Enter AUNTMAY as a code to unlock all cheats.

Debug Mode:
Enter DRILHERE as a code.

Level Select:
Enter NONJYMNT as a code.

All Gallery Entries:
Enter DRKROOM as a code.

All Training Challenges:
Enter CEREBRA as a code.

Big Head Mode:
Enter ALIEN as a code.

Big Feet Mode:
Enter STACEYD as a code.

What if? Mode:
Enter VVISIONS as a code.

Programmer High Scores:
Enter VVHISCRS as a code.

Amazing Bag Man:
Beat the game two times under the normal difficulty setting.

Get Unlimited Lives:
Put in SUPERGOD for the code

All Costumes:
Enter WASHMCHN as a code.

Battle Wounded Spidey Costume:
Defeat Electro for the first time.

Ben Reilly Costume:
Beat the game two times under the normal difficulty setting.

Captain Universe Costume:
Beat the game two times under the normal difficulty setting.

Peter Parker Costume:
Beat the game two times under the normal difficulty setting.

Quick Change Spidey Costume:
Beat the game two times under the normal difficulty setting.

Scarlet Spidey Costume:
Beat the game two times under the normal difficulty setting.

Spider Phoenix Costume:
Beat the game under the hard difficulty setting.

Spider-Man 2099 Costume:
Beat the game two times under the normal difficulty setting.

Spidey Unlimited Costume:
Beat the game two times under the normal difficulty setting.

Symbiote Spider Costume:
Finish the game once in easy mode or any level.

Venom-Earth X Costume:
Beat the game under the normal difficulty setting.

What's Up Spidey:
When you enter WHASSUP as a cheat, Spidey will come on screen, punch the place were you enter the code, and a new word will come up like Balloon or Bunny

Thanks to Revolution readers Erik Larsen, David Yogi Permissandhi, Phat Pat and Trey Williams!