Splinter Cell

Cheat mode:
Press [F2] to display the console window, then type one of the following codes and press [Enter] to activate the corresponding cheat function.
Note: Press [Tab] instead of [F2] in the demo version of the game.

Code            Effect 
-----------------------------------------------------------
invincible 1        Enable God mode 
invincible 0        Disable God mode 
health              Full health 
invisible 1         Invisibility 
invisible 0         Disable invisibility 
ammo                Full ammunition 
fly                 Flight mode 
ghost               No clipping mode 
walk                Disable flight and no clipping modes 
stealth             View stealth amount 
playersonly 1       Freeze enemies 
playersonly 0       Unfreeze enemies 
killpawns           No enemies 
summon <item name>  Spawn indicated item
-----------------------------------------------------------

Item names:
Use one of the following entries with the summon code.

echeloningredient.disposablepick
echeloningredient.ef2000
echeloningredient.estickycamera 
echeloningredient.estickyshocker
echeloningredient.esmokegrenade
echeloningredient.efraggrenade
echeloningredient.elockpick
echeloningredient.ediversioncamera
echeloningredient.ewallmine
echeloningredient.echemflare
echeloningredient.eflare
echeloningredient.elasermic
echeloningredient.ecamerajammer
echeloningredient.eringairfoilround
echeloningredient.erappellingobject
echeloningredient.medkit 

Keypad codes:

Mission 1 - Police Station
Keypad 1: 091772
Keypad 2: 5929 

Mission 4 - CIA HQ
Keypad 1: 7687
Keypad 2: 110598
Keypad 3: 2019
Keypad 4: 110700
Keypad 5: 0614 (if Dougherty gets through the door before you can) 

Mission 5 - Kalinatek
Keypad 1: 97531
Keypad 2: 33575
Keypad 3: 1250 

Mission 8 - Chinese Embassy, Part II
Keypad 1: 1436
Keypad 2: 9753
Keypad 3: 1456
Keypad 4: 1834
Keypad 5: 7921 

Mission 9 - Presidential Palace
Keypad 1: 2126
Keypad 2: 70021
Keypad 3: 66768