Cheat mode:
Type one of the following codes at the "Cheats" section of the "Specials" option at the main menu:

Result - Code:

Level select - MME WEB
All comic book covers - KIRBYFAN
Storyboard Viewer - ROBRTSON
Quick Change Spidey costume - SM LVIII
Peter Parker costume - MRWATSON
Amazing Bag Man costume - KICK ME
Scarlet Spider costume - XILRTRNS
Spidey Unlimited costume - SYNOPTIC
Captain Universe costume - TRISNTNL
Spidey 2099 costume - MIGUELOH
Symbiote Spidey costume - SECRTWAR
Pulsating head - EGOTRIP
Unlimited webbing - GLANDS
Full health - WEAKNESS
Master code - LEANEST
Cartoon Spider-Man - FUNKYTWN
Stickman Spider-Man - STICKMAN
Ben Reilly costume - CLUBNOIR
God mode - ADMNTIUM
What If mode - UATUSEES
Character viewer - RGSGLLRY
View FMV sequences - CINEMA
All comic books - FANBOY