Crysis PC Cheats
There are a couple of different ways to cheat in Crysis; either by console commands, editing the game files, or using a trainer. Since trainer sites are seldom reliable (and I cannot host trainers), and many people have indicated that they have trouble bringing up the console to enter the codes, below I will describe how to edit the game files to enable cheats in Crysis.
Note that you can also find more basic information on editing game files to cheat by looking in the PC cheats area.
Editing Crysis Config Files
The first step is locating the game config files, they are located in the game's config folder, generally they will be somewhere on your PC like this:
C:\Program Files\Electronic Arts\Crytek\Crysis\Game\Config
Inside this folder you will find .cfg files for each difficulty of the game (diff_easy.cfg, diff_normal.cfg, etc.).
Select the config file that corresponds to the difficulty level you are playing, and before doing anything make a backup of it. You can save a backup right in that config folder, just name something descriptive so you'll know, such as BACKUP_diff_easy.cfg, or something similar. If you are running Vista you will need to have admin rights to do this.
Now open the original in a text editor such as notepad, add one or more of the codes below to the end of the file, and save it. Then you can play Crysis on the difficulty level you edited, and whatever cheat codes you have at the end of this file will be activated. Note: each cheat code is entered on a new line, and you only need to enter the cheat code and toggle, not the descriptions I have listed.
For example, if you just want to activate God Mode in Crysis, you would add the following line to the file, save it, and play.
g_godMode = 1
Most requested codes for Crysis
Cheat code: g_godMode = 1
Cheat code: i_unlimitedammo = 1
Have Enemies Ignore You
Cheat code: ai_IgnorePlayer = 1
Carry Unlimited Weapons
Cheat code: i_noweaponlimit = 1
Listed on the next page are all of the codes for Crysis, if I've missed any let me know...